Question

The number of electron and neutrons in an atom are 13 and 14, respectivly. Find out the mass number, valency and symbol of the element

Answer 1

Answer:

Atomic number=No. of protons=No. of electrons in ground state

Atomic number=13=No. of protons

Atomic mass=no. of protons+no. of neutrons=13+14=27

For isotope no. of proton=13(same atomic number but different mass number are isotopes)

no. of electrons=13 , no. of neutrons=14+2=16