Question

Write no.of electrons,no.of protons and no.of neurons in chloride ion (cl-). Chlorine mass number (31)

Answer 1

Answer:

Number of electrons = 18

Number of protons = 17

Number of neutrons = 14

Explanation:

Number of protons = atomic number

Atomic number of chlorine = 17

∴Number of protons in $Cl^{-}$= 17

$Cl^{-}$ ion has an additional electron. Therefore number of electrons = 17+1 = 18

Mass number = number of protons + number of neutrons

Given mass number of chlorine = 31

∴31 = number of protons + number of neutrons

31 = 17 + x

x = 31-17

  = 14

Therefore number of protons = 14