Which of the following statement are CORRECT?
I. Metals have the tendency to accept electrons while forming bonds.
II. In modern periodic table, metallic properties decreases in a period while moving left to right.
III. In modern periodic table, metallic properties increases while going top to bottom in group.
- AOnly I and II
- BOnly I and III
- COnly II and III
- DAll I, II and III
Solution & Step-by-step Explanation
Let us analyze each statement:
Statement I is incorrect: Metals have a tendency to lose electrons (electropositive character) to form cations, whereas non-metals accept electrons.
Statement II is correct: As we move from left to right across a period, the nuclear charge increases, making it harder to lose electrons. Hence, metallic character decreases.
Statement III is correct: As we move down a group, atomic size increases and valence electrons are further from the nucleus, making them easier to lose. Hence, metallic character increases.
Therefore, statements II and III are correct.
Statement I is incorrect: Metals have a tendency to lose electrons (electropositive character) to form cations, whereas non-metals accept electrons.
Statement II is correct: As we move from left to right across a period, the nuclear charge increases, making it harder to lose electrons. Hence, metallic character decreases.
Statement III is correct: As we move down a group, atomic size increases and valence electrons are further from the nucleus, making them easier to lose. Hence, metallic character increases.
Therefore, statements II and III are correct.