Question

2. Which atomic particle is neutral?
3. Where in an atom, its most of the mass is found?
at
4. What is the maximum number of electrons in each of the first two shells of an atom?
5. An atom has an atomic number of 15. Write its electronic configuration.
6. How many neutrons does each of the chlorine isotopes have?​

Answer 1

2. Neutron

3. In it's nucleus, where the protons and neutrons are found.

4. K shell - 2 electrons

L shell - 8 electrons

5. 2,8,5

6. 20 neutrons

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