Looks like seven valance electrons to me. that would make this group the halogens, 7A.
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The group with the electronic configuration of 3s2 3p5 would be group 7, which is the halogens group. This configuration indicates that the atom has 7 valence electrons, matching the group number.
The electron configuration for chlorine is 1s2 2s2 2p6 3s2 3p5 or [Ne] 3s2 3p5 in shorter notation.
Chlorine is a non-metal. It is found in group 7 of the periodic table of elements and has electronic configuration [Ne] 3s2 3p5.
Seven.
The long noble gas electron configuration of chlorine is [Ne] 3s^2 3p^5 and the short noble gas electron configuration is [Ne] 3s^2 3p^5.
Chlorine's atomic number is 17. Thus, neutral chlorine has 17 protons and 17 electrons. Its total configuration is 1s2 2s2 2p6 3s2 3p5, so its valence configuration is 3s2 3p5.