helium atom has a atomic mass 40 and two protoans in its nucleus.How many neutron does it have?
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helium atom has a atomic mass 40 and two protoans in its nucleus.How many neutron does it have?
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I hope this question was Based on The Formula ,Atomic mass=Number of neutrons+Number of protons.
Given ,Atomic mass of Helium =40
Number of protons=2
Hence ,Number of neutrons=40-2=38
Number of Neutrons in the helium atom of mass 40 possessing 2 protons is 38 neutrons .
Verified answer
Protons + neutrons= atomic massso helium atom has 40-2=38 neutrons ..
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