Poll Results
No votes. Be the first one to vote.
The number of neutrons in sodium and magnesium is
To find the number of neutrons in sodium (Na) and magnesium (Mg), we subtract the atomic number from the atomic mass:
Sodium (Na) has an atomic number of 11 and an atomic mass of 23. Neutrons = 23 – 11 = 12.
Magnesium (Mg) has an atomic number of 12 and an atomic mass of 24. Neutrons = 24 – 12 = 12.
So, the correct answer is (a) 12 and 12 respectively.
Class 9th Science NCERT MCQ Questions
NCERT Books MCQ Questions Session 2024-2025.
Share