1.

A radioactive substance .)(88)X^(228) (IIA) emits 3alpha and 3beta-particles to form 'Y'. O which group of long form of the periodic table does 'Y' belong?

Answer»

IVA
VA
VIA
VIIA

Solution :`UNDERSET("IIA GROUP")(._(88)X^(228)) to underset("VIIA group")(._(85)Y^(216))+3alpha+3beta`


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