Question

Which has smallest size ..nitrogen or oxygen

Answer 1

Answer:Oxygen

Explanation:

Because it has eight electrons in its shells. The eight protons in oxygen atom's nucleus will exert more force than nitrogen's seven electrons. Also, oxygen has same number of shells as nitrogen. ... When electrons are closer it means atomic radius is smaller.

Answer 2

Answer:

Oxygen is smaller in size.

Explanation:

• Across the period in the periodic table, the atomic radii of elements decrease.
• This is because there is an increase in the number of protons and electrons in the same shell.
• There is an addition of one electron in every next element without any increment in shell number.
• There is also an increment of protons; hence, the positive charges pull the negative charges close.
• Nitrogen is before Oxygen in the period. Nitrogen has lesser electrons than oxygen, so its size is bigger.  

Conclusion:

Oxygen is smaller than Nitrogen.