Question

Which of the following oxides will give the most basic solution when dissolved in water?

Answer 1

Answer: The correct answer is Option C.

Explanation:

Oxides are formed when a metal or a non-metal reacts with oxygen molecule. There are two types of oxides which are formed: Acidic oxides and basic oxides.

Acidic oxides are formed by the non-metals.

Basic oxides are formed by the metals.

From the given options:

• Option 1:  $SO_2$

Sulfur is the 16th element belonging to Group 16 and period 3 of the periodic table. This is a non-metal and will form acidic oxide.

• Option 2:  $CO_2$

Carbon is the 6th element belonging to Group 14 and period 2 of the periodic table. This is a non-metal and will form acidic oxide.

• Option 3:  $K_2O$

Potassium is the 19th element belonging to Group 1 and period 4 of the periodic table. This is a metal and will form basic oxide.

• Option 4:  $P_4O_{10}$

Phosphorus is the 15th element belonging to Group 15 and period 3 of the periodic table. This is a non-metal and will form acidic oxide.

• Option 5:  $SO_3$

Sulfur is the 16th element belonging to Group 16 and period 3 of the periodic table. This is a non-metal and will form acidic oxide.

Hence, the correct answer is Option C.