Question

Tolong dijawab pakai cara ya?
1. unsur : A
Nomor Atom : 4
Massa Atom : 9
Jumlah :
Proton :..........
Elektron :.........
Neutron :........
Lambang/Notai :......
2. Unsur : B
nomor Atom : 8
Massa Atom :..........
Jumlah :
Proton :.........
Elektron :.......
Nutron : 8
Lambang/Notasi :.........

Answer 1

1. No. Atom A : 4 Massa atom : 9 Jumlah : Proton = no. Atom = 4 Elektron = proton= 4 Neutron = no.massa-no. Atom = 9-4 = 5 Lambang/ notasi = (neutron diatas, proton dibawah) unsur X = angka 5 diatas, angka 4 dibawah) unsur B 2. Unsur B No. Atom = 8 Massa atom = proton + neutron = 8 + 8 = 16 Proton = 8 Elektron = 8 Neutron = 8 Lambang /notasi = (angka 8 diatas, angka 8 dibawah) unsur O