Question

	X	Y
Electronic configuration	2,8,7	2,8,2
Nature of oxide	Dissolves in water and turns blue litmus to red	Very low solubility in water. Dissolves in hydrochloric acid.
Tendency for oxidizing and reducing reactions	Tends to oxidize elements and compounds.	Tends to act as a reducing agent.
Electrical and thermal conductivity	Very poor electrical conductor. Poor thermal conductivity.	Good electrical conductor. Good thermal conductor.
Tendency to form alloys and amalgams.	No tendency to form alloys.	Form alloys.

Using the above information, complete the following.

1. __________ is the metallic element.
2. Metal atoms tend to have a maximum_______ electrons in the outermost energy level.
3. Non-metallic elements tend to form_______ oxides while metals tend to form________ oxides.
4. Non-metallic elements tend to be _______ conductor of heat and electricity.

Metals tend to _______ electrons and act as ______ agents in their reactions with elements and compounds.

Answer 1

The given empty blank has to be filled with correct answers.

1. Y is the metallic element.
2. Metal atoms tend to have a maximum three electrons in the outermost energy level.
3. Non-metallic elements tend to form acidic oxides while metals tend to form basic oxides
4. Non-metallic elements tend to be poor conductor of heat and electricity.
5. Metals tend to lose electrons and act as reducing agents in their reactions with elements and compounds.

Therefore, answers are below:

1. Y ii) three iii) acidic, basic iv) poor v) lose, reducing