1.

The atomic number of four elements P, Q, R and S are 6, 10, 12 and 17 respectively. Which two elements can combine to form a covalent compound? (a) P and R (b) Q and S (c) P and S (d) R and S

Answer»

The atomic number of four elements P, Q, R and S are 6, 10, 12 and 17 respectively. Which two elements can combine to form a covalent compound?
(a) P and R (b) Q and S (c) P and S (d) R and S



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