Question

write down the formula of hypochlorite and chromate of element x,mass number 23 and 12 neutron
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Answer 1

Explanation:

Mass no. = no. of protons + no. of neutrons

23 = no. of protons + 12

∴ no. of protons = 23−12

=11

Atomic number (Z) = no. of protons = no. of electrons =11