Question

calculate the number of neutrons protons electrons ¡) atomic number 3 and mass 7 ¡¡) atomic number 92 and mass number 238​. please urgent. Help me friends.plz plz plz

Answer 1

Answer:

I)no.of electrons=3

no. of protons =3

no.of neutrons = mass of the atom - no.of protons

=7-3=4

ii) no. of electrons =92=no.of protons

no. of neutrons =146

Answer 2

Answer:

Atomic number of an element is 92. Therefore it has 92 electrons and corresponding 92 protons. Atomic mass number of the element is 238. Therefore number of neutrons=Atomic mass number - atomic number=146

Hope this is helpful for you.