Chemical Bonding and molecular structure-1

The geometry of a molecule with 4 bonded pairs of electrons and 0 lone pairs of electrons

• Tetrahedral

• Trigonal Planar

• Bent

• Trigonal Pyramidal

The geometry of a molecule with 2 bonded pairs of electrons and 2 lone pairs of electrons

• Tetrahedral

• Trigonal Planar

• Bent

• Trigonal Pyramidal

The Lewis structure of the CO₃^2- ion is

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As the number of covalent bonds between two atoms increases, the distance between the atoms ______ and the strength of the bond between them ______.

• increases, increases

• decreases, decreases

• increases, decreases

• decreases, increases

According to VSEPR theory, what is the shape of SF₄?

• Square planar (6 bp, 2 lp)

• Trigonal bipyramidal (5 bp, 0 lp)

• See-saw shaped (4 bp, 1 lp)

• Tetrahedral (4 bp, 0 lp)

 A lone pair is defined as

• A pair of bonding electrons
• One non-bonding electron
• A pair of non-bonding electrons
• A pair of electrons on the central atom

What molecular shape is the structure shown here? (NH₄⁺)

• linear
• trigonal planar
• tetrahedral
• trigonal pyramidal

Assertion (A) : Though the central atom of both NH₃ and H₂O molecules are sp³ hybridised, yet H–N–H bond angle is greater than that of H–O–H.

Reason (R) : This is because nitrogen atom has one lone pair and oxygen atom has two lone pairs.

• A and R both are correct, and R is the correct explanation of A.

• A and R both are correct, but R is not the correct explanation of A.

• A is true but R is false

• A and R both are false.

The shape of IF₇ molecule is

• Trigonal bipyramidal

• Pentagonal Bipyramidal

What geometry will this molecular structure have?: PH₃

• bent
• tetrahedral
• linear
• trigonal pyramidal