1.

For ""_(15)^(31)P is one of the isotopes of phosphorus. State the number of protons, neutrons andelectrons in it respectively.

Answer»

15, 31, 15
15, 15, 16
15, 31, 16
15, 16, 15

Solution :For `""_(15)^(31)`P
Z = p = `BAR(e)` = 15
A = p + n
`THEREFORE` n = A - p = 31 - 15 = 16


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