Fill in the blanks from the choices given below:

Electrovalent compound have a ………..(low/high )boiling point.

Match  the column A with columnB:

i)     Correct item from B matching sodium chloride.Answer as follows:

ii)     Correct item from B matching ammonium ion, and so on.

A. Sodium chloride	(i) Increases
B. Ammonium ion	(ii) Covalent bond
C. Electronegativity across the period	(iii) Ionic bond
D. Electronegativity across the period	(iv) Covalent the coordinate bond
E. Carbon tetrachloride	(v) Decerease

Fill in the blanks with the correct words from the brackets:

Generally ionic compounds exist in (i) …………..(solid/liquid/gas) state. Melting and boiling points of covalent compounds are generally (ii)………… (low /high).

Fill in the blanks from the choices given below:

A molecule of ………… contains a triple bond (hydrogen, ammonia, nitrogen).

Fill in the blanks from the choices given below:
In covalent compounds, the bond is formed due to the ………(sharing/transfer) of electrons.