Question

The atomic number and mass number of an element are 26 & 56 ,respectively calculate the number of neutron in its atom

Answer 1

no. of neutrons are 30 bcoz
atomic no.= no. of protons=26
MASS NO.=NO. OF PROTONS+NO. OF NEUTRONS
so; no. of neutrons = mass no.-no. of protons
no. of neutron = 56-26=30........hope it helps u
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Answer 2

Atomic number=26
Mass number=56
Number of neutron=56-26
Number of neutrons=30
Number of protons=26
Number of electrons=26