. Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have
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Answered by
3
Hi
no of proton : 2
atomic mass of helium :4
No of neutrons : ????
we know that ,
Atomic mass of atom = no of protons + no. of neutrons
we have to find no. of neutrons
therefore, 4u = 2 + no. of neutrons
4- 2 = no. of neutrons
no. of neutrons : 2
therefore, no of neutrons in helium atom: 2
May it is helpful for you .
no of proton : 2
atomic mass of helium :4
No of neutrons : ????
we know that ,
Atomic mass of atom = no of protons + no. of neutrons
we have to find no. of neutrons
therefore, 4u = 2 + no. of neutrons
4- 2 = no. of neutrons
no. of neutrons : 2
therefore, no of neutrons in helium atom: 2
May it is helpful for you .
Answered by
4
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Helium atom has two neutrons.
The mass of an atom is the sum of the masses of protons and neutrons present in its nucleus.
Since helium atom has two protons, mass contributed by the two protons is (2 × 1) u = 2 u.
Then, the remaining mass (4 − 2) u = 2 u is contributed by 2u/1u = 2 neutrons.
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