Template_talk:Infobox_neodymium_isotopes

Talk:Isotopes of neodymium

Talk:Isotopes of neodymium

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Problem

Hi everyone!

Look, 27.2% (142Nd) + 12.2% (143Nd) + 23.8% (144Nd) + 8.3% (145Nd) + 17.2% (146Nd) + 5.8% (148Nd) + 5.6% (150Nd) =100.10% (but not exactly 100%)

In your case the Standard atomic weight will be 144.384!

Please find and correct mistake!-Surprizi (talk) 11:34, 5 September 2021 (UTC)

I checked and only from 142Nd we can take out 0.10% to receive Standard atomic weight — 144.242. So in my opinion 142Nd percentage should be 27.1% not 27.2%.-Surprizi (talk) 11:51, 5 September 2021 (UTC)
Probably there's a rounding error in the table or the source. I will take a look later. ComplexRational (talk) 14:49, 5 September 2021 (UTC)
142Nd6082141.907723327.1%38.45699301
143Nd6083142.909814312.2%17.43499734
144Nd6084143.910087323.8%34.25060078
145Nd6085144.91257368.3%12.02774361
146Nd6086145.913116917.2%25.09705611
148Nd6088147.91689305.8%8.579179794
150Nd6090149.92089105.6%8.395569896
Ar, stand.(Nd) 100% 144.242141

This is my calculations with corrections from 27.2% to 27.1%.-Surprizi (talk) 18:43, 5 September 2021 (UTC)

Standard atomic weight is given in {{CIAAW2017}}[1]. In fact, this source is already present in the article. -DePiep (talk) 19:12, 5 September 2021 (UTC)
It's because 142Nd is 27.152(40)% which was rounded to 27.2%. Double sharp (talk) 14:02, 30 December 2023 (UTC)

References

  1. [1]
    "Standard atomic weights of 14 chemical elements revised". CIAAW. 2018-06-05.

Possible α decay of several isotopes of neodymium

According to , 143Nd (N = 83), 145Nd (N = 85) and 146Nd (N = 86) should respectively have an α decay half-life at the order of 1088 years, 1022 years and 1034 years. Given the trend, 147Nd (N = 87) may have an alpha decay partial half-life at the order of 1052 years. 148Nd (N = 88) should have an α decay half-life at the order of 1070 years. Note that alpha decay of 146Nd would be non-ignorable (having significant branching ratio) compared to the theoretical half-life of double beta decay at the order of either 1028 years given in , or 1033 years given in .

139Nd (N = 79) and 149Nd (N = 89) have respectively an alpha decay energy of 0.21 MeV and 0.29 MeV, which is quite low, so alpha decay may be possible but with a partial half-life long beyond imagination. 129.104.241.214 (talk) 09:43, 4 November 2023 (UTC) and Cristiano Toàn (talk) 02:41, 26 January 2024 (UTC)
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