Question

Tentukan jumlah proton,elektron dan neutron dari unsur-unsur
23/11 Na
31/15P
40/20Ca
75/33As

Answer 1

23Na11 ⇒ p = e = 11; n = 23 - 11 = 12

31P15 ⇒ p = e = 15; n = 31 - 15 = 16

40Ca20 ⇒ p = e = 20 ; n = 40 - 20 = 20

75As33 ⇒⇒ p = e = 33 ; n = 75 - 33 = 42