3 energy levels
17 protons and electrons
a sulfur atom has 3 energy levels. 2 on the first. 8 on the second and 6 on the third
4
2
The Group Number
Four
2
a sulfur atom has 3 energy levels. 2 on the first. 8 on the second and 6 on the third
4
Chlorine has three electron shells with 2, 8, 7 electrons.
Electrons in the plutonium atom are placed in 7 energy levels.
2
The Group Number
3.
There are 2 energy levels in a Carbon atom. The first energy level consists of '1s' orbital, and the second energy level consists of the '2s' orbital and the '2p' orbital.
In the question, it should be either "chlorine atom" or "chloride ion". Chlorine atom has 7 valence electrons. Chloride ion has 8 valence electrons.
7 electrons
An atom of chlorine has 17 protons.