The correct electronic configuration of a chloride ion is:

The subatomic particle called electron was discovered by:

Which of the following represents the correct electron distribution in magnesium ion?

Goldstein’s experiments which involved passing high voltage electricity through gases at very low pressure resulted in the discovery of:

The number of electrons in the atom of an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of an atom of this element?