Question

Atoms of eight elements A, B. C. D, E, F, G, and H have three electronic shells each but the number of valence electrons increases by one. It was found that A and G combine to form an ionic compound, which is usually added to food in small amount while cooking. oxides of A and B are basic in nature; while those of E and F are acidic. The oxide of D is found to be almost neutral. Based on the above information, answer the following questions:
a) Which two elements have valency 2?
b) Which one of these eight elements is most likely to be found in gaseous state at room temperature?
c) What is the chemical name of the compound formed between A and G?
d) what type of bonds are formed by element D?
e) Out of A and E, which has a bigger size and why?

Answer 1

Answer:

A) B and F has 2 valency

B) F is gaseous at room temperature

C) sodium and chlorine

D) in d ionic bond will form

E) e has bigger size