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Give one example of each of the followin...

Give one example of each of the following and indicate their positions in periodic table (long form) (i) liquid non-metal (ii) liquid metal (iii) radiactive halogen (iv) radiactive inert gas (v) radiactive alkali-metal.

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(i) Liquid non-metal: Bromine (Br), 17th group in 4th period. (ii) liquid metal: mercury (Hg), 12th group in 6th period. (ii) Liquid metal: mercury (Hg), 12th group in 6th period (iii) radioactive halogen: astatine (At), 17th group in 6th period. (iv) radioactive inert gas: radon (Rn), 18 th group in 6th period. (v) radioactive alkali-metal: francium (Fr), 1st group in 7th group.
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