An element 'X' has mass number 4 and atomic number 2. Write the valenc – InterviewSolution

1.	An element 'X' has mass number 4 and atomic number 2. Write the valency of thiselement. Will it react with other atoms of different elements ?A
Answer» We know that only valence electrons take part in bond formation with different atoms.In the atom of 'X' element there are only two electrons since atomic number is 2. Thus, K shell is fully filled for this atom.Hence,its valency is zero. It will not react with other atoms of different elements.

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