ICSE Class 10 Chemistry 2013 Solved Paper

	X	Y
NormalElectronicConfiguration	2, 8, 7	2, 8, 2
Nature of oxide	Dissolves in water and turns blue litmus red	Very low solubility in water. Dissolves in hydrochloric acid
Tendency for oxidising and reducing reactions	Tends to oxidise 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 amalgums	No tendency to form alloys	Forms alloys

Using the information above, complete the following :

Question : 56

Total: 84

Metal atoms tend to have a maximum of..........electrons in the outermost energy level.

Solution:

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