Chemistry
Answer
The bond formed between two atoms by sharing a pair of electrons, provided entirely by one of the combining atoms but shared by both is called a coordinate bond.
Conditions for the formation of coordinate bond are:
(i) One of the two atoms must have at least one lone pair of electrons, e.g., ammonia (NH3), water (H2O).
(ii) Another atom should be short of at least a pair of electrons, e.g., Hydrogen ion (H+).
Related Questions
There are three elements E, F, G with atomic numbers 19, 8 and 17 respectively. Give the molecular formula of the compound formed between E and G and state the type of chemical bond in this compound.
A compound is formed between atoms A and B. The electronic configuration of A is 2,8,1 and B is 2,6.
(a) Write the equation of the formation of ions of A and B.
(b) Why do A and B form ions?
(c) Which of the following can form a compound?
(i) A and A (ii) A and B (iii) B and B
Also state the type of bonding present in the compound(d) If A and B combines, which of them will get oxidised?
(e) Draw an electron dot diagram of the ionic compound formed in part (c).
(f) Write the formula of the compound formed in part (c) which has a
(i) high melting and boiling point
(ii) gaseous compound
(iii) good conductor of electricity in molten state.Draw an electron dot diagram for the formation of each of the following :
(i) Hydronium ion,
(ii) Ammonium ion,
(iii) Hydroxyl ion.
State the type of bonding present in them.
How many atoms of each kind are present in the following molecules : calcium oxide, chlorine, water, carbon tetrachloride ?