Question

Which of the following is the lightest metal

• A. Lithium
• B. Aluminium
• C. Titanium
• D. Magnesium

Answer 1

The correct option is A

Lithium

Explanation of the correct option:

(A)Lithium

• Lithium has the lowest atomic weight and it is present in the alkali metal group so lithium is considered the lightest metal.

Explanation of incorrect options:

(B)Aluminum

• Aluminum is not a light metal but it is very strong and flexible.

(C)Titanium

• Titanium is present in the alkali metal group but its atomic weight is not so less than lithium, so it is not the lightest metal.

(D)Magnesium

• Magnesium is the lightest structural metal available in the earth's crust.

Hence, option (A) is correct., Lithium is the lightest metal.