How many neutrons and protons are …
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Posted by Md Asfan 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
We know atomic number(z) = no of protons = no of electrons
Also mass number(A) = no of protons + no of neutrons
136C:
Here mass number = 13
Atomic number = Number of protons = 6
Number of neutrons = (mass number) – (Atomic number)
= 13 – 6 = 7
8O16:
Here mass number = 16
Atomic number = 8 Number of protons = 8 Number of neutrons = (mass number) – (Atomic number)
= 16 – 8 = 8
12Mg24:
Here Mass number = 24
Atomic number = Number of protons = 12
Number of neutrons = (mass number) – (Atomic number)
= 24 – 12 = 12
26Fe56:
Here mass number = 56
Atomic number = Number of protons = 26
Number of neutrons = (mass number ) – (Atomic number)
= 56 – 26 = 30
38Sr88:
Here mass number = 88
Atomic number = Number of protons = 38
Number of neutrons = (mass number) – (Atomic number)
= 88 – 38 = 50
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