Question

i want to know the first thirty elements and their valencies

Answer 1

H(1)
He(0)
Li(1)
Be(2)
B(3)
C(4)
N(3)
O(2)
F(1)
Ne(0)
Na(1)
Mg(2)
Al(3)
If this answer is sufficient for you then please mark me as brainiest