Question

Of these, the least dense metal is ___________. 1. Hg 2. Au 3. Cu 4. Na

Answer 1

Explanation:

mercury is the dense metal whose symbol is hg

Answer 2

Answer:

The correct answer is option (4)

(4) Na

The least dense metal is Na ( Sodium )

Explanation:

Sodium (Na) has large atomic radius and the atomic mass is also very low.

When compared to all the elemental metal, Sodium is considered as the third least dense metal and also sodium can float in water. Because sodium is less denser than water

The density of Sodium is higher than Lithium but the density of potassium is lower than that of Sodium.

Sodium is a alkali metal and belongs to group 1 in the periodic table. The melting and boiling point of Sodium are 98°C and 883°C.

• The density of Sodium (Na) is 0.971 g/cc
• The density of Mercury (Hg) is 13.546 g/cc
• The density of Gold (Au) is 19.32 g/cc
• The density of Copper (Cu) is 8.96 g/cc

In the options given, The least dense metal is Sodium (Na) and the highest dense metal is Gold (Au)

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