Question

an element x gas an atomic number 11 ,and another element Y has an atomic number 19 .in both elements which element is small in atomic size and why​

Answer 1

Answer:

) X has a more metallic character as metallic character decreases as we go from left to right in a period.

ii) Valency of X= +1

Valency of Y= +3

iii) The statement is true. As we move from left to right along a period the atomic size decreases. This is because of higher number of protons in the nucleus which leads to a higher force of attraction between the nucleus and electrons,

Explanation:

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