What is the formula of calculating the no. Of valence electrons of a metal?
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Look for which group does the metal belong to:-
Group 1: 1 valence electron
Group 2: 2 valence electrons
Group 13: 3 valence electrons
Group 14: 4 valence electrons
Group 15: 5 valence electrons
Group 16: 6 valence electrons
Group 17: 7 valence electrons
Group 18: 8 valence electrons (except for helium, which has 2)
Group 3: 3 valence electrons
Group 4: 2 to 4 valence electrons
Group 5: 2 to 5 valence electrons
Group 6: 2 to 6 valence electrons
Group 7: 2 to 7 valence electrons
Group 8: 2 or 3 valence electrons
Group 9: 2 or 3 valence electrons
Group 10: 2 or 3 valence electrons
Group 11: 1 or 2 valence electrons
Group 12: 2 valence electrons
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