Question

Which of the following configurations represents the most electronegative element?

• A. $1s^{2}2s^{2}2p^{6}3s^{1}$
• B. $1s^{2}2s^{2}2p^{5}$
• C. $1s^{2}2s^{2}2p^{6}3s^{2}3p^{5}$
• D. $1s^{2}2s^{2}2p^{4}$

Answer 1

Answer: (B)

$1s^{2}2s^{2}2p^{5}$

Answer 2

: Z = 9 is the atomic number of fluorine which is the most electronegative element.