Atomic Structure
The notation for sodium chloride, NaCl , stands for one
formula unit.
molecule.
crystal.
atom.
formula unit.
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Which of the following atom has the shortest atomic radiusA. N
B. F
C. O
D. B
The bond between HโH is
A. stronger than the bond between HโCl
B. weaker than the bond between HโCl
C. neither stronger nor weaker than the bond between HโCl
D. none of these
Which of the following bonds will be formed between alkali metals and halogens
A. ionic
B. covalent bond
C. metallic bond
D. coordinate covalent bond
Protons have
A. negative charges.
B. an attraction for neutrons.
C. no charges.
D. no mass.
Which of the following sentence is incorrect for covalent bond?
A. Strength of covalent bond depends upon overlapping at atomic orbitals.
B. Covalent bond is not directional.
C. There is sharing of electrons between atoms bonded by covalent bond
D. Covalent bond is formed between atoms having less difference in their electronegativity.
Bonds that possess between 5% and 50% ionic character are considered to be
A. Ionic.
B. Pure covalent.
C. Polar covalent.
D. nonpolar covalent.
Number of nodal planes for f-orbital are
A. 3
B. 2
C. 1
D. 0
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