Question

The incorrect statement among the following is:

• A. the properties of elements are periodic function of their atomic numbers.
• B. among the isoelectric species, $N{a}^{+},M{g}^{2+}$ and $A{l}^{3+}$ ion having smallest radius is $A{l}^{3+}$ ion.
• C. the outermost electronic configuration of group $15$ elements is $n{s}^{2}n{p}^5$.
• D. electronegativity of an element depend upon its atomic size.

Answer 1

The correct option is C the outermost electronic configuration of group $15$ elements is $n{s}^{2}n{p}^5$.

• The nitrogen family includes the following compounds: nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). All Group 15 elements have the electronic configuration $n{s}^{2}n{p}^3$ in their outer shell, where n is the principal quantum number.
  

• Hence option C is incorrect option.