Question

the atomic mass of an element is 197 and its atomic number is 76 find the number of protons neutrons and electrons​

Answer 1

Given,

Atomic number=76

Atomic mass = 197

.'. Number of proton=76

Number of electrons =76

Atomic mass=Number of protons+Number of neutrons

197=76+N

197-76=N

121=N

Answer 2

Answer:

no. of neutrons-121

no. of protons = no. of electrons - 76

Explanation:

atomic no.= no. of protons -76

no.of protons and electrons are equal , so 76

atomic mass = no. of protons + no. of neutrons

121 + 76

197