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 rightmost groups constitute nonmetals and those in the middle are metalloids or semi-metals. The metallic character reduces across a period. Metal oxides are basic whereas nonmetal oxides are acidic, 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.