Q65 of 149 Page 194

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

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

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63

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

 64

The correct electronic configuration of a chloride ion is:

 66

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?

 67

The ion of an element has 3 positive charges. The mass number of atom of this element is 27 and the number of neutrons is 14. What is the number of electrons in the ion?