The biggest reserves of thorium are in:
| A. | India |
| B. | China |
| C. | The Soviet Union |
| D. | U.S.A |
Answer : A Explanation : MUHAJIR T M said: (3:45am on Tuesday 17th October 2017)
Thoriumis achemical elementwith symbolThandatomic number90. Thorium metal issilvery andtarnishesblack when exposed to air, forming the dioxide; it is moderately hard,malleable, and has a highmelting point. Thorium is an electropositiveactinide, whose chemistry is dominated by the 4oxidation state; it is quite reactive, prone to ignition on air when finely divided.
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Option: A Explanation : Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. |
