Question

What do all atoms in a piece of pure copper have in common?

Answer 1

All copper atoms have

29 protons

in their nuclei.

Explanation:

By definition, a copper atom has

29 protons

, 29 positively charged particles in their nuclei; i.e.

Z

=

29

. This is what defines the particle as a copper atom, i.e.

Z

=

atomic number

determines the element.

The nucleus MAY contain approx. 34-35 neutrons, massive, neutrally charged particles, in their nuclei, and the differing number of neutrons gives rise to the existence of copper isotopes:

63

C

u

,

69

%

;

65

C

u

,

31

%

.

Answer 2

whether copper is pure or not it will have the same number of protons that's 29

Hope it helps