Question

The chemical elements are arranged in the order of increasing electronegativities in the sequence

• A. $P$, $Si$, $Se$, $Br$, $N$
• B. $Si$, $Se$, $P$, $Br$, $N$
• C. $Si$, $P$, $Se$, $Br$, $N$
• D. $Se$, $P$, $Si$, $Br$, $N$

Answer 1

Answer: (C)

Electronegativity increases as we move from left to right in a period so phosphorus is more electronegative than silicon and bromine is more electronegative than selenium and electronegativity decreases as we descend the group
$\therefore$ Nitrogen is the most electronegative element of the given elements
$\therefore$ The observed order is $Si$, $P$, $Se$, $Br$, $N$