S1744711
contestada

Elements are identified by their atomic number because
A.the mass of an element changes over time.
B.the number of protons remains constant.
C.atoms of the same element have different numbers of neutrons.
D.elements in a group react in a similar way.

Respuesta :

mamamia64u

Answer:

The atomic number stands for the number of protons in an atom of the element.

The number of protons determines the identity of the element,

So the atomic number identifies the element. GOOD LESSONS ♡