A given compound A2 whose total dA-A is 1.4 A0. The atomic (covalent) radius of an atom is.

 Solution:  We known that

Solved Questions:

(1) The electronegativity of F and H are 4.0 and 2.1 respectively. The percentage ionic character in H and F bond is.

(2) A given compound AB whose electronegative difference is 1.9 . Atomic radius of A and B are 4 and 2 Angstroms the distance between A and B means dA-B is ?

(3)If covalent radius of A is 0.99 A0 and bond length is 1.46 A0 Calculate the covalent radius of B. XA and XB are 3.5 and 2.5 respectively.

(4) The C–C single bond length is 1.54 Angstroms and that of Cl–Cl is 1.98 Angstroms. If the electronegativity of Cl and C are 3.0 and 2.5 respectively, the C–Cl bond-length will be equal to ?

(5) Stevenson & Schromaker Equation: Determination covalent radius of Heterogeneous Molecules.

(6) How to calculate percentage (%) ionic character in covalent compounds?

If covalent radius of A is 0.99 A0 and bond length is 1.46 A0 Calculate the covalent radius of B. XA and XB are 3.5 and 2.5 respectively.

 (A) 0.35 A⁰              (B) 0.56 A⁰              (C) 1.98A⁰               (D) 10.48A⁰

The covalent radius of B is calculated by the relation given by Stevenson & Schoemaker, given as:

For a diatomic Hetero molecule:

Bond Length (l_A-B) = r_A + r_B- 0.09(X_A-X_B)

Where X_A= Electronegativity of more electronegative atom

Where X_B= Electronegativity of less electronegative atom

Bond Length=1.46 A⁰ = 0.99 A⁰ + r_B - 0.09(3.5-2.5)

 Hence r_B = 0.56 A⁰ 

Solved Questions:

(1) The electronegativity of F and H are 4.0 and 2.1 respectively. The percentage ionic character in H and F bond is.

(2) A given compound AB whose electronegative difference is 1.9 . Atomic radius of A and B are 4 and 2 Angstroms the distance between A and B means dA-B is ?

(3) The C–C single bond length is 1.54 Angstroms and that of Cl–Cl is 1.98 Angstroms. If the electronegativity of Cl and C are 3.0 and 2.5 respectively, the C–Cl bond-length will be equal to ?

(4) Stevenson & Schromaker Equation: Determination covalent radius of Heterogeneous Molecules.

(5) How to calculate percentage (%) ionic character in covalent compounds?