Question

tuliskan jumlah proton,elekyron,dan neutron dalam masing masing atom berikut :
a.39 K 19
b.27 A 13
c.85 Rb 35
d.29 SI 14​

Answer 1

Jawaban:

ingat bahwa,

a N z

dimana,

a = nomor massa

N = unsur

z = nomor atom

z = proton = elektron

neutron = a - z

Penjelasan:

a. 39 K 19

proton = 19

elektron = 19

neutron = 39 - 19

neutron = 20

b. 27 Al 13

proton = 13

elektron = 13

neutron = 27 - 13

neutron = 14

c. 85 Rb 35

proton = 35

elektron = 35

neutron = 85 - 35

neutron = 50

d. 29 Si 14

proton = 14

elektron = 14

neutron = 29 - 14

neutron = 15