Question

calculate the number of electrons,protons and neutrons in sodium atom . given that atomic number of sodium is 11 and mass number ( atomic mass ) is 23​

Answer 1

Answer:

atomic number (z) = 11

mass number ( A) = 23

therefore number of protons = atomic number = 11

since , the atom is neutral ,

number of electrons = number of protons = 11

mass number ( A) = no. of protons (p) + no.of neutrons

number of neutrons = A-Z = 23-11= 12

Answer 2

Answer:

atomic number (z) = 11

mass number ( A) = 23

therefore number of protons = atomic number = 11

since , the atom is neutral ,

number of electrons = number of protons = 11

mass number ( A) = no. of protons (p) + no.of neutrons

number of neutrons = A-Z = 23-11= 12