Question

Observe the table and identify metals and non-metals. Select the correct option.

$\begin{array}{ccc}\text{Sl.No}& \text{Set-1}& \text{Set-2}\\ 1.& \text{Sodium (Na)}& \text{Oxygen (O)}\\ 2.& \text{Magnesium (Mg)}& \text{Chlorine (Cl)}\\ 3.& \text{Iron (Fe)}& \text{Helium (He)}\\ 4.& \text{Gold (Au)}& \text{Sulphur (S)}\\ 5.& \text{Calcium (Ca)}& \text{Carbon (C)}\end{array}$

• A. Set 1: metals and set 2: non-metals.
• B. Set 1: non-metal and set 2: metals.
• C. Both sets 1 & 2 are metals.
• D. Both sets 1 & 2 are non-metals.

Answer 1

The correct option is A Set 1: metals and set 2: non-metals.

Metals are solids, and are good conductors of heat and electricity. They are malleable, ductile and sonorous in nature.

All metals except mercury are solids at room temperature and almost all have high melting points (except gallium).

Most of the non-metals except bromine (liquid) are solids and gases.

From the table, set-1 elements (sodium, magnesium, iron, gold, and calcium) are metals, and set-2 elements (oxygen, chlorine, helium, sulphur, and carbon) are non-metals.