Multiple choice

Atomic number of Cl is 17. How many protons are present in it?

  1. 34

  2. 7

  3. 17

  4. 0

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The atomic number of an element is defined as the number of protons in the nucleus of its atom. Since the atomic number of Chlorine is 17, it contains 17 protons.