Question

An atom has mass number of 238 and atomic number of 92 and atom B
has mass number 235 and atomic number 92
a) How many protons in A & B atoms
b) How many neutrons in A & B atoms
c) Are A and B isotopes or isobars Explain

Answer 1

Answer:

Atom A,

Mass Number (A) = 238

Atomic Number (Z) = 92

Atom B,

A = 235

Z = 92

a. No. of protons in atom A = 92

No. of protons in atom B = 92

b. No. of neutrons in atom A = (A-Z)

= (238-92) = 146

No. of neutrons in atom B = (A-Z)

= (235-92) = 143

c. A and B can be referred as "isotopes" as they have the same atomic number but different mass number.

I Hope This Helps.