a. oksigen A=8 Z=16
b. calsium A=55 Z=133
c. ferum A=26 Z=56
d. ion k+ (A=19 , Z=39)
e. ion Mg2+ (A=12 , Z=24)
Tentukan jumlah proton, elektron neutron ..
Jawaban:
proton = p
elektron = e
neutron = n
ion positif = q
Z = p
e = p – q
n = A – Z
a. oksigen
p = 8
e = 8
n = 16 – 8 = 8
b. calsium
p = 55
e = 55
n = 133 – 55 = 78
c. ferum
p = 26
e = 26
n = 56 – 26 = 30
d. K+
p = 19
e = 19 – 1 = 18
n = 39 – 19 = 20
e. Mg2+
p = 12
e = 12 – 2 = 10
n = 24 – 12 = 12