Calculate the number of electrons,protons and neutrons.
40
a) Ar
18
14
b) N
7
39
c) K
19
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Answered by
1
(A) e - 18
p - 18
n - 22
(B) e - 7
p - 7
n - 7
(C) e - 19
p - 19
n - 20
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p - 18
n - 22
(B) e - 7
p - 7
n - 7
(C) e - 19
p - 19
n - 20
Hope it helps,,...
Please mark me as the brainliest!!
Answered by
1
Explanation:
see mass number is proton + Neutron
so if we Subtract proten we get Neutron
and atomic number = number of protons since atom is electrically neutral it has same number of electrons so atomic number = p+e
so number of protons = atomic number = number of nutron
and Neutron = atomic number -mass number
18 protons and neutrons in argon
and neutrons = 40-18
= 22 we do rest accordingly
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