Question

Consider the following statements about group 13 elements of the periodic table. (A) Electronegativity decreases down the group.
(B) Size increases down the group.
(C) Ionization energy decreases down the group.
(D) Boiling point of Boron is maximum.
(E) Melting point of Boron is maximum.

• A. A, B, C are correct
• B. A, D, E are correct
• C. D and E are correct
• D. A, B, C, D and E are correct

Hint:

In periodic trends, electronegativity and ionization energy typically decrease down a group, while atomic size increases. Elements like Boron, due to their small size, exhibit exceptional boiling and melting points.

Answer 1

The Correct Option is C

Step 1: Understanding the properties of group 13 elements.
- Electronegativity decreases down the group due to the increase in size of atoms. - The size of atoms increases as we go down the group due to the addition of electron shells. - Ionization energy decreases down the group as the outer electrons are farther from the nucleus and are more easily removed. - The boiling and melting points of Boron are higher than those of other elements in the group due to its small atomic size and strong covalent bonds.
Step 2: Conclusion.
Therefore, the correct answer is (3) D and E are correct.