Question

Which of the following statements is not correct about the trends when going from left to right across a period in 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 becomes more acidic.

Answer 1

The correct option is C The atoms lose their electrons more easily.

Across a period, the number of valence electrons increases. The groups at the left side of the table constitute metals, the right-most groups constitute non-metals and those in the middle are metalloids or semi-metals.

The metallic character reduces across a period. We know that metal oxides are basic whereas non-metal oxides are acidic in nature. Hence, the oxides become more acidic across a period.

Also, across a period, the tendency to lose electrons decreases and that to gain electrons increases.