Question

In the formation of a compound XY2, atom X donates one electron to each Y atom. Show the electron dot structure of X and Y and the formation of XYT What is the nature of bond in XY2 ? Write any three properties of XY2. The electronic configurations of these elements X and Y are as follows : X-2,8,2 Y - 2, 7

CBSE Class X Science LA (5 Marks)

Answer 1

The compound formed is MgF2.
Bond formed is ionic
Properties:
1) It is a white crystalline salt.
2) The compound is transparent over a wide range of wavelength.
3) Are inert to organic chemicals and many acids.

 ..                    ..
: F .   . Mg .  . F :
  ..                  ..

Answer 2

Answer:

1. Y ox X xo Y

2. It is an ionic bond

3.

• This compound is a good conductor of electricity

• High melting/boiling point
• It will be in a crystal form