HARD
10th CBSE
IMPORTANT
Earn 100

Show the formation of KCl by electron transfer method.

Important Questions on Metals and Non-Metals

HARD
10th CBSE
IMPORTANT
Show the formation of MgO by electron transfer method.
HARD
10th CBSE
IMPORTANT
Show the formation of Na2O by electron transfer method.
MEDIUM
10th CBSE
IMPORTANT
Differentiate between ionic and covalent compounds on the basis of the following properties:
(a) Inter particle force of attraction.
(b) Solubility of compounds in water.
(c) Electrical conductivity.
HARD
10th CBSE
IMPORTANT
Write the names and symbols of the two most reactive metals. Explain by drawing electronic structures how any one of the two metals react with a halogen. State any four physical properties of the compound formed.
MEDIUM
10th CBSE
IMPORTANT
The atomic number of an element A is 9 and that of element B is 20. Write down the symbols of the ions you would expect to be formed from their atoms.
HARD
10th CBSE
IMPORTANT
The atomic number of an element X is 12 and that of Y is 8.
(a) Write the electronic configuration of X and Y.
(b) How these elements X and Y attain the nearest noble gas electronic configuration?
(c) What type of compound is formed between X and Y?
 
MEDIUM
10th CBSE
IMPORTANT
A solid compound has a high melting point. It does not conduct electricity in the solid-state but becomes a good conductor in the molten state. What type of chemical bonds are present in the compound?
MEDIUM
10th CBSE
IMPORTANT
What type of bonds is present in water molecule? Draw the electron-dot structure of water H2O molecule.