Which element is the lightest metal on the periodic table?
A
Potassium
B
Magnesium
C
Sodium
D
Lithium
Correct Answer: Option D — Lithium
Explanation:
Lithium is the lightest metal known, with a very low density that allows it to float on water. It is widely used in rechargeable batteries f...
Lithium is the lightest metal known, with a very low density that allows it to float on water. It is widely used in rechargeable batteries for electronic devices and electric vehicles due to its high energy density.