Question

Which is the following pair is not true?
Calcium-ca
Silver-ag
Gold-au
Copper-co

Answer 1

$\huge \mathcal \red{Answer:-}$

• Copper - co is wrong formula

Answer 2

Answer:

4). Copper-co is not true.

Explanation:

The symbol of a chemical element, copper, is Cu. The atomic mass and the atomic number of copper are 63.546 g/mol and 29, respectively.

The copper element is both ductile and malleable, as well as also considered a very good conductor of electricity and heat.

The boiling and melting points of copper are 2595 °C and 1083 °C, respectively.

It is corrosion-resistant and has very little chemical reactivity.

It is a non-magnetic element and has very good machinability.

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