Question

(i) Electropositive nature of the element(s) increases down the group and decreases across the period
(ii) Electronegativity of the element decreases down the group and increases across the period
(iii) Atomic size increases down the group and decreases across a period (left to right)
(iv) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.

Name the element which is a metalloid

• A. Lithium (Li)
• B. Beryllium (Be)
• C. Boron (B)
• D. Oxygen (O)

Answer 1

The correct option is C

Boron (B)

Boron is a metalloid with atomic number 5 and it is denoted as B.