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

Options

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

C

Explanation

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.
`:.` Nitrogen is the most electronegative element of the given elements.
`:.` The observed order is Si, P, Se, Br, N.