First slide

Atomic number, mass number, isotopes, isobars and isotones

Question

Which one of the following species is isoelectronic with p^3- ?

Easy

A

Kr
B

${Ca}^{2 +}$
C

${Na}^{+}$
D

F^-

Solution

p^-3 and Ca⁺² are isoelectronic species

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