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torisob [31]
2 years ago
6

The table below lists three characteristics of an atom of an element

Chemistry
1 answer:
ahrayia [7]2 years ago
6 0
It’s Neon (Ne)

Explanation
Neon has 10 protons, and 10 neutrons.
How to find neutrons:
The number of mass minus the number of protons. 20-10=10.

Valence electrons are the number on the last shell of energy level, with is 8.
But a easy way to find it is by looking at the group number, the last group number in case 18 only focus at 8. Questions?
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