Question

Which of the following is not a correct statement about the trends when going from left to right across the periods of the periodic table?

• A. The elements become less metallic in nature.
• B. The number of valence electrons increases.
• C. The atoms lose their electrons more easily.
• D. The oxides become more acidic.

Answer 1

The correct option is C

The atoms lose their electrons more easily.

Explanation for correct option:

C. The atoms lose their electrons more easily.

Trends on moving across a period in the periodic table:

• On moving across the period, the tendency to lose electrons decreases as the electrons are added up to the shells.
• While moving down the group the number of valence electrons remains the same for the same group.

Thus, when going from left to right across the periods of the periodic table, the atoms will not lose easily. Hence the statement-"The atoms lose their electrons more easily" is not correct.

Explanation for incorrect options:

A. On moving across a period the metallic character decreases as the tendency of atoms to lose or gain electrons changes in the period.

B. On moving across the period, the number of valence electrons increases as the atomic radius increases.

D. The oxides become more acidic on moving across the period as the metallic character decreases.

Hence, the correct option is C i.e. the atoms lose their electrons more easily.