Chlorine, which is used to clean swimming pools, exists as two chlorine atoms covalently bonded to each other. how many valence electrons does one chlorine (cl) atom have?

Each chlorine has 7 valence electrons.

Step-by-step explanation: Chlorine is an element with atomic number 17 and thus contains 17 electrons. Valence electrons are the electrons which are present in the valence shell.

Electronic configuration of chlorine:

Chlorine atom has 7 valence electrons (2 in 3s and 5 in 3p orbital) and thus need to share one electron with other chlorine atom to complete its octet and attain stability.

it is b)

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step-by-step explanation: