Question

give reason :- atomic size goes on decreasing while going from left to right in period.​

Answer 1

Answer:

The atomic radius goes on decreasing while going from left to right in a period because the atomic number of the elements increases, which means the number of protons and electrons in the atoms increases (the extra electrons being added to the same shell).

Answer 2

Answer:

due to effective nuclear charge

Explanation:

the electrons fill in same shell while going along the period the electrons in same shell cannot shield themselves so effective nuclear charge increases so electrons are pulled close to nucleus.So atomic size decreases