Question

the table below gives information about the nucleus of each of four atoms. atom number of protons number of neutrons a 6 6 d 6 7 e 7 7 g 7 8 how many different elements are represented by the nuclei in the table? 1 2 3 4

Explanation:

Step1: Recall element - defining property

The number of protons determines the element.

Step2: Identify unique proton numbers

Atoms A and D have 6 protons (same element). Atoms E and G have 7 protons (same element).

Answer:

2