Question

Between Cobalt (Co) and Nickel (Ni) which element has

1. Higher atomic mass?
2. Higher atomic number?

Answer 1

Step 1: Higher atomic mass:

Atomic mass means the amount or quantity of matter contained in an element.

• The atomic mass of Cobalt (Co) is $58.93$
• The atomic mass of Nickel (Ni) is $58.69$

Between Cobalt (Co) and Nickel (Ni), Cobalt (Co) has the highest atomic mass.

Step 2: Higher atomic number:

The atomic number of an element means the number of protons in the nucleus.

• The atomic number of Cobalt (Co) is $27$
• The atomic number of Nickel (Ni) is $28$

Hence, Cobalt (Co) has the highest atomic mass, and Nickel(Ni) has the highest atomic number.