A058317 - OEIS

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

(list; graph; refs; listen; history; text; internal format)

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