Question

Which element possesses biggest atomic radii.

• A. $P$
• B. $Si$
• C. $Al$
• D. $Mg$

Answer 1

Answer: (D)

$Mg$

Answer 2

Element – Mg Al Si P

Atomic radii (Å) – 1.60 1.43 1.32 1.28

as we move across the period nuclear charge increases, hence, size decreases.