The mass number of argon is 40. Which one of the following statements is correct?
The number of protons in argon is 22.
The number of neutrons in argon is 18.
The number of electrons in argon is 18.
The sum of numbers of protons and electrons in argon is 40.
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-1 – 2022