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Explain why the order of reactivity increases down group I elements but decreases down group (VII) elements

Explain why the order of reactivity increases down group I elements but decreases down group (VII) elements.

Answers

john
- As you move down group 1, the no of energy levels increases making electrons in the outermost energy level to become
loosely attracted to the nucleus hence easily host.
- In group (VII) elements reacts by gaining electrons. As an electron is entering the outermost energy level, it is repelled
?½ by the electrons already there. As we go down the group, the energy levels increase hence repulsion/shielding
effect increases
john3 answered the question on November 3, 2017 at 07:19

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