Question

The following table shows the position of the elements A, B, C, D, e and F in the modern periodic table.

Answer the following giving reasons:
a. Which element will form only covalent compounds?
b. Which element is a non-metal with valency 3?
C. Out of D and e, which one has a higher atomic radius?​

Answer 1

Explanation:

1. Element E - Silicon
2. (i) Element E - Silicon forms only covalent compounds.
3. nitrogen
4. A non-metal which has valency three is nitrogen (N).
5. Element B is a non metal having valency 3, and Element D has larger radius because as move right of the periodic table, atomic radius decreases. Electrons come closer to the nucleus due to opposite charges of electron and nucleus.

Answer 2

Explanation:

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