Assertion: Along a period, atomic size of the elements increases.
Reason: In a particular, no new shells is formed and electrons are filled in the same shell.
Mark the correct choice
Assertion: Along a period, atomic size of the elements increases.
Reason: In a particular, no new shells is formed and electrons are filled in the same shell.
Mark the correct choice
The correct option is D Assertion is incorrect but reason is correct.
Explanation for assertion statement:
Assertion here is incorrect, across the period if we move from left to right, atomic size decreases.
Explanation for reason statement:
As we move across a period, the number of shells remains the same and there is an increment in the number of protons (as the atomic number is increasing) and the last electron keeps on adding to the same shell. As a result, nuclear pull increases on the valence electron, thus atomic size decreases and the tendency to accept electrons increases which means non-metallic character increases
Hence, D) Assertion is incorrect but the reason is correct.
Assertion is incorrect but reason is correct.
Explanation for assertion statement:
Assertion here is incorrect, across the period if we move from left to right, atomic size decreases.
Explanation for reason statement:
As we move across a period, the number of shells remains the same and there is an increment in the number of protons (as the atomic number is increasing) and the last electron keeps on adding to the same shell. As a result, nuclear pull increases on the valence electron, thus atomic size decreases and the tendency to accept electrons increases which means non-metallic character increases
Hence, D) Assertion is incorrect but the reason is correct.
