Question

the atomic number of a given element is 92 and the mass number is 238 calculate the number of neutron in the atom? plzzzzzzzzzzzzzzzzzzz answer its urgent

Answer 1

hello friend...!!

• According to the question we should calculate the number of neutrons

• Mass number = no. protons + no.of neutrons

•given that,
atomic number = 92
mass number = 238

we know that,

atomic number = no. of electrons = no. of protons

therefore,

number of neutrons = 238 - 92

number of neutrons = 146 .


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Hope it is useful...!!

Answer 2

atomic no = no of protons = 92
mass no = 238
no of neutrons = mass no - no of protons
                          =   238-92
                          =146