First slide

Periodicity in atomic properties

Question

Which is true about the electronegativity order of the following elements?

Moderate

A

P > Si
B

C > N
C

Br > Cl
D

Sr > Ca

Solution

P and Si belong to group 4 and group 5 respectively and both of them are in the 3rd Period.
EN increases along the Period
$∴ EN of P (2.1) > Si (1.8)$

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