Question

Which of the following element shows variable valency?
1.Copper
2.Sodium
3.Calcium
4.Magnesium
​

Answer 1

COPPER

Copper shows variable valency because it is a block element.

Extra Information -

Copper is a chemical element. The symbol of Copper is Cu. As a matter Copper is very ductile, soft, malleable and have very high electrical and thermal conductivity.

It is commonly used for making a wide variety of products,including electrical wires,pipes,etc.

Atomic Number - 29

Melting Point- 1084.62°C, 1984.32°F, 1357.77 K

Boiling Point - 2560°C, 4640°F, 2833 K

Answer 2

[tex]\huge\COPPER

Copper shows variable valency because it is a block element.

Extra Information

Copper is a chemical element. The symbol of Copper is Cu. As a matter Copper is very ductile,soft,malleable

and have very high electrical and thermal conductivity.

It is commonly used for making a wide variety of products,including electrical wires,pipes,etc.

Atomic Number - 29

Melting Point - 1084.62°C, 1984.32°F, 1357.77 K

Boiling Point - 2560°C, 4640°F, 2833 K