How many neutrons are present in 1 atom of chlorine? A.
18

B.
32

C.
16

D.
25

18

Explanation:

17 protons + 18 neutrons = 35

17 protons + 20 neutrons = 37 particles in the nucleus

Hope this is right

Hope this helps

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.