Question

Out of Aluminium and Nitrogen, whose atomic size is bigger and why?​

Answer 1

Explanation:

The atomic radius of boron is given as 88×10−12∙m ; that of aluminum is 118×10−12∙m . While atomic radii DECREASE across a Period, a row of the Period Table, from left to right as we face the Table, atomic radii INCREASE down a Group, a column of the Periodic Table, due to the shielding of the valence electrons by the closed valence shell(s) that intervenes between the nucleus and the valence, outermost electrons. And these data certainly reflect this trend…

Answer 2

Answer:

Nitrogen

Explanation:

No. of protons in a nitrogen atom = 7

No. of protons in an aluminium atom = 13

Since no. of protons in aluminium atom is greater than no. of protons in nitrogen atom, the nuclear pull is greater in aluminium which decreases its atomic size.

Hence, Nitrogen has a greater atomic size.

Hope this helps!