A058317 Number of neutrons in atoms of the n-th element of the periodic table (for the most abundant isotope).

0, 2, 4, 5, 6, 6, 7, 8, 10, 10, 12, 12, 14, 14, 16, 16, 18, 22, 20, 20, 24, 26, 28, 28, 30, 30, 32, 31, 35, 35, 39, 41, 42, 45, 45, 48, 48, 50, 50, 50, 51, 52, 54, 55, 57, 58, 60, 61, 64, 66, 69, 71, 76, 74, 77, 78, 81, 82, 82, 82, 84, 84, 88, 89, 93, 94, 97, 98, 99, 100, 103

Offset

1,2

Links

Table of n, a(n) for n=1..71.

Y. Bentor, Periodic Table: Neutrons, Chemical Elements.com.

M. Winter, The periodic table of the elements, WebElements.

Example

a(79)=118 because the 79th element is gold, whose only naturally occurring isotope is Au-197, which has 79 protons, 79 electrons and 118 neutrons.

Crossrefs

Cf. A007656, A058318.

Sequence in context: A059583 A086370 A083788 * A278761 A287076 A344587

Adjacent sequences: A058314 A058315 A058316 * A058318 A058319 A058320

Keyword

nonn,fini

Author

Labos Elemer, Dec 12 2000

Extensions

a(38) updated by Sean A. Irvine, Aug 24 2021

Status

approved