In the formation of the compound `XY_(2)`, an atom X gives one electron to each Y atom. What is the nature of bonds in `XY_(2)` ? Give two properties of `XY_(2)`.

In the formation of a compound AB, an atom of element A lost two electrons while an atom of element B gained two electrons. Predict two properties of AB.

In the formation of Na_2 O , each Na atom transfers ____________ to O atom. (one electron/two electrons)

The heat of atomization of a compound XY_(3) in gaseous state is E kJ mol^(-1) what is the X-Y bond energy of kJ mol^(-1) unit?

Give reasons for the following: Formation of ammonia involves one atom of nitrogen sharing three electrons one with each of the three atoms of hydrogen.

If the ratio of coordination no. of A to that iof B is x:y, then the ratio of no. of atoms of A to that no, of atoms of B in the unit cell is

Suppose two elements X and Y combine to form two compound XY_2 and X_2Y_3 weighs 85g . The atomic masses of X and Y are respectively :

The elements X and Y form compound having molecular formula XY_(2) and XY_(4) (both are non - electrolysis), when dissolved in 20 g benzene, 1 g XY_(2) lowers the freezing point by 2.3^(@)c whereas 1 g of XY_(4) lowers the freezing point by 1.3^(C) . Molal depression constant for benzene is 5.1. Thus atomic masses of X and Y respectively are

Suppose two elements X and Y combine to form two compounds XY_(2) and X_(2)Y_(3) when 0.05 mole of XY_(2) weight 5g while 3.011xx10^(23) molecules of X_(2)Y_(3) weight 85g . The atomic masses of X and Y are respectively.

Write the coefficient of : 4xy in x^(2) - 4xy + y^(2)