Lihat sumber Isotop hafnium

{{Kotak info isotop hafnium}}
'''[[Hafnium]]''' ('''<sub>72</sub>Hf''') yang terbentuk secara alami terdiri dari lima [[isotop]] [[Isotop stabil|stabil]] (<sup>176</sup>Hf, <sup>177</sup>Hf, <sup>178</sup>Hf, <sup>179</sup>Hf, dan <sup>180</sup>Hf) dan satu [[Radionuklida|radioisotop]] berumur sangat panjang, <sup>174</sup>Hf, dengan [[waktu paruh]] {{val|2e15|}} tahun. Selain itu, ada 30 radioisotop lain yang diketahui, yang paling stabil adalah <sup>182</sup>Hf dengan waktu paruh {{val|8.9e6}} tahun. [[Radionuklida punah|Radionuklida yang telah punah]] ini digunakan dalam [[penanggalan hafnium–wolfram]] untuk mempelajari kronologi [[diferensiasi planet]].<ref name=":0">{{cite journal | vauthors = Kleine T, Walker RJ | title = Tungsten Isotopes in Planets | journal = Annual Review of Earth and Planetary Sciences | volume = 45 | issue = 1 | pages = 389–417 | date = Agustus 2017 | pmid = 30842690 | pmc = 6398955 | doi = 10.1146/annurev-earth-063016-020037 | bibcode = 2017AREPS..45..389K }}</ref>

Tidak ada radioisotop lain yang memiliki waktu paruh lebih dari 1,87 tahun. Kebanyakan isotop memiliki waktu paruh di bawah 1 menit. Ada juga 26 [[isomer nuklir]] yang diketahui, yang paling stabil adalah <sup>178m2</sup>Hf dengan waktu paruh 31 tahun. Semua isotop hafnium bersifat radioaktif atau [[stabil secara pengamatan]], artinya mereka diprediksi bersifat radioaktif tetapi tidak ada peluruhan aktual yang teramati.

==Daftar isotop==
{{Isotopes table
|symbol=Hf
|refs=<!-- not NUBASE2016 yet (2019-07-14) -->
|notes=m, unc(), mass#, exen#, hl#, hl-nst, spin(), spin#, daughter-st, IT, EC
}}
|-
| <sup>153</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 81
| 152,97069(54)#
| 400#&nbsp;[[Mili-|m]]dtk [>200&nbsp;[[Nano-|n]]dtk]
|
|
| 1/2+#
|
|
|-
| style="text-indent:1em" | <sup>153m</sup>Hf
| colspan="3" style="text-indent:2em" | 750(100)#&nbsp;keV
| 500#&nbsp;mdtk
|
|
| 11/2−#
|
|
|-
| rowspan=2|<sup>154</sup>Hf
| rowspan=2 style="text-align:right" | 72
| rowspan=2 style="text-align:right" | 82
| rowspan=2|153,96486(54)#
| rowspan=2|2(1)&nbsp;dtk
| [[Peluruhan beta|β<sup>+</sup>]]
| <sup>154</sup>Lu
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| [[Peluruhan alfa|α]] (langka)
| <sup>150</sup>Yb
|-
| rowspan=2|<sup>155</sup>Hf
| rowspan=2 style="text-align:right" | 72
| rowspan=2 style="text-align:right" | 83
| rowspan=2|154,96339(43)#
| rowspan=2|890(120)&nbsp;mdtk
| β<sup>+</sup>
| <sup>155</sup>Lu
| rowspan=2|7/2−#
| rowspan=2|
| rowspan=2|
|-
| α (langka)
| <sup>151</sup>Yb
|-
| rowspan=2|<sup>156</sup>Hf
| rowspan=2 style="text-align:right" | 72
| rowspan=2 style="text-align:right" | 84
| rowspan=2|155,95936(22)
| rowspan=2|23(1)&nbsp;mdtk
| α (97%)
| <sup>152</sup>Yb
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (3%)
| <sup>156</sup>Lu
|-
| style="text-indent:1em" | <sup>156m</sup>Hf
| colspan="3" style="text-indent:2em" | 1959,0(10)&nbsp;keV
| 480(40)&nbsp;[[Mikro-|μ]]dtk
|
|
| 8+
|
|
|-
| rowspan=2|<sup>157</sup>Hf
| rowspan=2 style="text-align:right" | 72
| rowspan=2 style="text-align:right" | 85
| rowspan=2|156,95840(21)#
| rowspan=2|115(1)&nbsp;mdtk
| α (86%)
| <sup>153</sup>Yb
| rowspan=2|7/2−
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (14%)
| <sup>157</sup>Lu
|-
| rowspan=2|<sup>158</sup>Hf
| rowspan=2 style="text-align:right" | 72
| rowspan=2 style="text-align:right" | 86
| rowspan=2|157,954799(19)
| rowspan=2|2,84(7)&nbsp;dtk
| β<sup>+</sup> (55%)
| <sup>158</sup>Lu
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| α (45%)
| <sup>154</sup>Yb
|-
| rowspan=2|<sup>159</sup>Hf
| rowspan=2 style="text-align:right" | 72
| rowspan=2 style="text-align:right" | 87
| rowspan=2|158,953995(18)
| rowspan=2|5,20(10)&nbsp;dtk
| β<sup>+</sup> (59%)
| <sup>159</sup>Lu
| rowspan=2|7/2−#
| rowspan=2|
| rowspan=2|
|-
| α (41%)
| <sup>155</sup>Yb
|-
| rowspan=2|<sup>160</sup>Hf
| rowspan=2 style="text-align:right" | 72
| rowspan=2 style="text-align:right" | 88
| rowspan=2|159,950684(12)
| rowspan=2|13,6(2)&nbsp;dtk
| β<sup>+</sup> (99,3%)
| <sup>160</sup>Lu
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| α (0,7%)
| <sup>156</sup>Yb
|-
| rowspan=2|<sup>161</sup>Hf
| rowspan=2 style="text-align:right" | 72
| rowspan=2 style="text-align:right" | 89
| rowspan=2|160,950275(24)
| rowspan=2|18,2(5)&nbsp;dtk
| β<sup>+</sup> (99,7%)
| <sup>161</sup>Lu
| rowspan=2|3/2−#
| rowspan=2|
| rowspan=2|
|-
| α (0,3%)
| <sup>157</sup>Yb
|-
| rowspan=2|<sup>162</sup>Hf
| rowspan=2 style="text-align:right" | 72
| rowspan=2 style="text-align:right" | 90
| rowspan=2|161,94721(1)
| rowspan=2|39,4(9)&nbsp;dtk
| β<sup>+</sup> (99,99%)
| <sup>162</sup>Lu
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| α (0,008%)
| <sup>158</sup>Yb
|-
| rowspan=2|<sup>163</sup>Hf
| rowspan=2 style="text-align:right" | 72
| rowspan=2 style="text-align:right" | 91
| rowspan=2|162,94709(3)
| rowspan=2|40,0(6)&nbsp;dtk
| β<sup>+</sup>
| <sup>163</sup>Lu
| rowspan=2|3/2−#
| rowspan=2|
| rowspan=2|
|-
| α (10<sup>−4</sup>%)
| <sup>159</sup>Yb
|-
| <sup>164</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 92
| 163,944367(22)
| 111(8)&nbsp;dtk
| β<sup>+</sup>
| <sup>164</sup>Lu
| 0+
|
|
|-
| <sup>165</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 93
| 164,94457(3)
| 76(4)&nbsp;dtk
| β<sup>+</sup>
| <sup>165</sup>Lu
| (5/2−)
|
|
|-
| <sup>166</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 94
| 165,94218(3)
| 6,77(30)&nbsp;mnt
| β<sup>+</sup>
| <sup>166</sup>Lu
| 0+
|
|
|-
| <sup>167</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 95
| 166,94260(3)
| 2,05(5)&nbsp;mnt
| β<sup>+</sup>
| <sup>167</sup>Lu
| (5/2)−
|
|
|-
| <sup>168</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 96
| 167,94057(3)
| 25,95(20)&nbsp;mnt
| β<sup>+</sup>
| <sup>168</sup>Lu
| 0+
|
|
|-
| <sup>169</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 97
| 168,94126(3)
| 3,24(4)&nbsp;mnt
| β<sup>+</sup>
| <sup>169</sup>Lu
| (5/2)−
|
|
|-
| <sup>170</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 98
| 169,93961(3)
| 16,01(13)&nbsp;jam
| [[Penangkapan elektron|EC]]
| <sup>170</sup>Lu
| 0+
|
|
|-
| <sup>171</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 99
| 170,94049(3)
| 12,1(4)&nbsp;jam
| β<sup>+</sup>
| <sup>171</sup>Lu
| 7/2(+)
|
|
|-
| style="text-indent:1em" | <sup>171m</sup>Hf
| colspan="3" style="text-indent:2em" | 21,93(9)&nbsp;keV
| 29,5(9)&nbsp;dtk
| [[Transisi isomerik|IT]]
| <sup>171</sup>Hf
| 1/2(−)
|
|
|-
| <sup>172</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 100
| 171,939448(26)
| 1,87(3)&nbsp;thn
| EC
| <sup>172</sup>Lu
| 0+
|
|
|-
| style="text-indent:1em" | <sup>172m</sup>Hf
| colspan="3" style="text-indent:2em" | 2005,58(11)&nbsp;keV
| 163(3)&nbsp;ndtk
|
|
| (8−)
|
|
|-
| <sup>173</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 101
| 172,94051(3)
| 23,6(1)&nbsp;jam
| β<sup>+</sup>
| <sup>173</sup>Lu
| 1/2−
|
|
|-
| <sup>174</sup>Hf<ref group="n">[[Radionuklida]] [[Nuklida primordial|primordial]]</ref>
| style="text-align:right" | 72
| style="text-align:right" | 102
| 173,940046(3)
| '''2,0(4){{e|15}} thn'''
| α
| '''<sup>170</sup>Yb'''
| 0+
| 0,0016(1)
| 0,001619–0,001621
|-
| style="text-indent:1em" | <sup>174m1</sup>Hf
| colspan="3" style="text-indent:2em" | 1549,3&nbsp;keV
| 138(4)&nbsp;ndtk
|
|
| (6+)
|
|
|-
| style="text-indent:1em" | <sup>174m2</sup>Hf
| colspan="3" style="text-indent:2em" | 1797,5(20)&nbsp;keV
| 2,39(4)&nbsp;μdtk
|
|
| (8−)
|
|
|-
| style="text-indent:1em" | <sup>174m3</sup>Hf
| colspan="3" style="text-indent:2em" | 3311,7&nbsp;keV
| 3,7(2)&nbsp;μdtk
|
|
| (14+)
|
|
|-
| <sup>175</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 103
| 174,941509(3)
| 70(2)&nbsp;hri
| β<sup>+</sup>
| '''<sup>175</sup>Lu'''
| 5/2−
|
|
|-
| <sup>176</sup>Hf<ref group="n">Digunakan dalam [[penanggalan lutesium-hafnium]]</ref>
| style="text-align:right" | 72
| style="text-align:right" | 104
| 175,9414086(24)
| colspan=3 align=center|'''[[Stabil Secara Pengamatan]]'''<ref group="n">Diyakini mengalami peluruhan α menjadi '''[[Iterbium-172|<sup>172</sup>Yb]]'''</ref>
| 0+
| 0,0526(7)
| 0,05206–0,05271
|-
| <sup>177</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 105
| 176,9432207(23)
| colspan=3 align=center|'''Stabil Secara Pengamatan'''<ref group="n">Diyakini mengalami peluruhan α menjadi '''[[Iterbium-173|<sup>173</sup>Yb]]'''</ref>
| 7/2−
| 0,1860(9)
| 0,18593–0,18606
|-
| style="text-indent:1em" | <sup>177m1</sup>Hf
| colspan="3" style="text-indent:2em" | 1315,4504(8)&nbsp;keV
| 1,09(5)&nbsp;dtk
|
|
| 23/2+
|
|
|-
| style="text-indent:1em" | <sup>177m2</sup>Hf
| colspan="3" style="text-indent:2em" | 1342,38(20)&nbsp;keV
| 55,9(12)&nbsp;μdtk
|
|
| (19/2−)
|
|
|-
| style="text-indent:1em" | <sup>177m3</sup>Hf
| colspan="3" style="text-indent:2em" | 2740,02(15)&nbsp;keV
| 51,4(5)&nbsp;mnt
|
|
| 37/2−
|
|
|-
| <sup>178</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 106
| 177,9436988(23)
| colspan=3 align=center|'''Stabil Secara Pengamatan'''<ref group="n">Diyakini mengalami peluruhan α menjadi '''[[Iterbium-174|<sup>174</sup>Yb]]'''</ref>
| 0+
| 0,2728(7)
| 0,27278–0,27297
|-
| style="text-indent:1em" | <sup>178m1</sup>Hf
| colspan="3" style="text-indent:2em" | 1147,423(5)&nbsp;keV
| 4,0(2)&nbsp;dtk
|
|
| 8−
|
|
|-
| style="text-indent:1em" | <sup>178m2</sup>Hf
| colspan="3" style="text-indent:2em" | 2445,69(11)&nbsp;keV
| 31(1)&nbsp;thn
|
|
| 16+
|
|
|-
| style="text-indent:1em" | <sup>178m3</sup>Hf
| colspan="3" style="text-indent:2em" | 2573,5(5)&nbsp;keV
| 68(2)&nbsp;μdtk
|
|
| (14−)
|
|
|-
| <sup>179</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 107
| 178,9458161(23)
| colspan=3 align=center|'''Stabil Secara Pengamatan'''<ref group="n">Diyakini mengalami peluruhan α menjadi [[Iterbium-175|<sup>175</sup>Yb]]</ref>
| 9/2+
| 0,1362(2)
| 0,13619–0,1363
|-
| style="text-indent:1em" | <sup>179m1</sup>Hf
| colspan="3" style="text-indent:2em" | 375,0367(25)&nbsp;keV
| 18,67(4)&nbsp;dtk
|
|
| 1/2−
|
|
|-
| style="text-indent:1em" | <sup>179m2</sup>Hf
| colspan="3" style="text-indent:2em" | 1105,84(19)&nbsp;keV
| 25,05(25)&nbsp;hri
|
|
| 25/2−
|
|
|-
| <sup>180</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 108
| 179,9465500(23)
| colspan=3 align=center|'''Stabil Secara Pengamatan'''<ref group="n">Diyakini mengalami peluruhan α menjadi '''[[Iterbium-176|<sup>176</sup>Yb]]'''</ref>
| 0+
| 0,3508(16)
| 0,35076–0,351
|-
| style="text-indent:1em" | <sup>180m1</sup>Hf
| colspan="3" style="text-indent:2em" | 1141,48(4)&nbsp;keV
| 5,47(4)&nbsp;jam
|
|
| 8−
|
|
|-
| style="text-indent:1em" | <sup>180m2</sup>Hf
| colspan="3" style="text-indent:2em" | 1374,15(4)&nbsp;keV
| 0,57(2)&nbsp;μdtk
|
|
| (4−)
|
|
|-
| style="text-indent:1em" | <sup>180m3</sup>Hf
| colspan="3" style="text-indent:2em" | 2425,8(10)&nbsp;keV
| 15(5)&nbsp;μdtk
|
|
| (10+)
|
|
|-
| style="text-indent:1em" | <sup>180m4</sup>Hf
| colspan="3" style="text-indent:2em" | 2486,3(9)&nbsp;keV
| 10(1)&nbsp;μdtk
|
|
| 12+
|
|
|-
| style="text-indent:1em" | <sup>180m5</sup>Hf
| colspan="3" style="text-indent:2em" | 2538,3(12)&nbsp;keV
| >10&nbsp;μdtk
|
|
| (14+)
|
|
|-
| style="text-indent:1em" | <sup>180m6</sup>Hf
| colspan="3" style="text-indent:2em" | 3599,3(18)&nbsp;keV
| 90(10)&nbsp;μdtk
|
|
| (18−)
|
|
|-
| <sup>181</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 109
| 180,9491012(23)
| 42,39(6)&nbsp;hri
| β<sup>−</sup>
| '''<sup>181</sup>Ta'''
| 1/2−
|
|
|-
| style="text-indent:1em" | <sup>181m1</sup>Hf
| colspan="3" style="text-indent:2em" | 595(3)&nbsp;keV
| 80(5)&nbsp;μdtk
|
|
| (9/2+)
|
|
|-
| style="text-indent:1em" | <sup>181m2</sup>Hf
| colspan="3" style="text-indent:2em" | 1040(10)&nbsp;keV
| ~100&nbsp;μdtk
|
|
| (17/2+)
|
|
|-
| style="text-indent:1em" | <sup>181m3</sup>Hf
| colspan="3" style="text-indent:2em" | 1738(10)&nbsp;keV
| 1,5(5)&nbsp;mdtk
|
|
| (27/2−)
|
|
|-
| <sup>182</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 110
| 181,950554(7)
| 8,90(9){{e|6}} thn
| β<sup>−</sup>
| <sup>182</sup>Ta
| 0+
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>182m</sup>Hf
| rowspan=2 colspan="3" style="text-indent:2em" | 1172,88(18)&nbsp;keV
| rowspan=2|61,5(15)&nbsp;mnt
| β<sup>−</sup> (58%)
| <sup>182</sup>Ta
| rowspan=2|8−
| rowspan=2|
| rowspan=2|
|-
| IT (42%)
| <sup>182</sup>Hf
|-
| <sup>183</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 111
| 182,95353(3)
| 1,067(17)&nbsp;jam
| β<sup>−</sup>
| <sup>183</sup>Ta
| (3/2−)
|
|
|-
| <sup>184</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 112
| 183,95545(4)
| 4,12(5)&nbsp;jam
| β<sup>−</sup>
| <sup>184</sup>Ta
| 0+
|
|
|-
| style="text-indent:1em" | <sup>184m</sup>Hf
| colspan="3" style="text-indent:2em" | 1272,4(4)&nbsp;keV
| 48(10)&nbsp;dtk
| β<sup>−</sup>
| <sup>184</sup>Ta
| 8−
|
|
|-
| <sup>185</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 113
| 184,95882(21)#
| 3,5(6)&nbsp;mnt
| β<sup>−</sup>
| <sup>185</sup>Ta
| 3/2−#
|
|
|-
| <sup>186</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 114
| 185,96089(32)#
| 2,6(12)&nbsp;mnt
| β<sup>−</sup>
| <sup>186</sup>Ta
| 0+
|
|
|-
| <sup>187</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 115
| 186,96459(43)#
| 30# dtk [>300&nbsp;ndtk]
|
|
|
|
|
|-
| <sup>188</sup>Hf
| style="text-align:right" | 72
| style="text-align:right" | 116
| 187,96685(54)#
| 20# dtk [>300&nbsp;ndtk]
|
|
| 0+
|
|
{{Isotopes table/footer}}

==Referensi==
{{reflist}}
* Massa isotop dari:
**{{NUBASE 2003}}
* Komposisi isotop dan massa atom standar dari:
**{{CIAAW2003}}
**{{CIAAW 2005}}
* Data waktu paruh, spin, dan isomer dipilih dari sumber-sumber berikut.
**{{NUBASE 2003}}
**{{NNDC}}
**{{CRC85|chapter=11}}

{{Indeks isotop}}

[[Kategori:Isotop hafnium]]
[[Kategori:Hafnium]]
[[Kategori:Daftar isotop menurut unsur|Hafnium]]