Question

What is the atomic number for copper?

Answer 1

Step 1. Atomic number

• The number of protons present in the nucleus of an atom is equal to the atomic number.
• The atomic number is represented as Z.

The formula for the calculation of atomic number is as follows.

$\text{Atomic number}\left(\text{Z}\right)\text{= Number of protons in the nucleus of an atom = Number of electrons in a neutral atom}$

Step 2. Atomic number for copper

• The number of protons in the nucleus of copper (Cu) atom is $29$.
• So, the atomic number of copper is $29$.