7A (17), the (18) right of the periodic (19) table, is made up of (20) __halogens_____ gases. The (21) outer valence level is (22) _______and the gases (23) are _______. (25) halogens, like group 8A (line 26) (18) are also (27) __________, but these (28) elements have _______ (29) electrons in their (30) valence level. They do (31) react with other (32) elements.
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7A (17), the (18) right of the periodic (19) table, is made up of (20) halogens gases. The (21) outer valence level is (22) fully filled and the gases (23) are highly reactive. (25) Halogens, like group 8A (line 26) (18) are also nonmetals, but these (28) elements have seven (29) electrons in their (30) valence level. They do (31) react with other (32) elements.
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