Question

1. What are the various letters used by Bohr to represent electron shells in an atom?

2. Name the particles which actually determine the mass of an atom?

3. Name the positively charged particle present in the atoms of all the elements?​

Answer 1

Answer:

1. k,l m,n
2. proton and Neutron
3. proton

hope it's helpful

Answer 2

Answer:

(1)K, L, M, and N are the letters used by Niels Bohr to represent electron shells in an atom.

(2)Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

(3)The proton is a positively charged particle present in the atoms of all elements.