An element forms a covalently bonded compound with hydrogen, that has the formula XH3, where X is the element. In which group of the periodic table would you expect to find X?
A
group 1
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B
group 14
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C
group 15
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D
group 17
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Solution
The correct option is A group 15 Group 15 form trihydrides with the non metal atoms like phosphine, ammonia (PH3,NH3)