Question 1

What does VSEPR stand for in chemistry?

Accepted Answer

Valence Shell Electron Pair Repulsion

Answer

Vibrating Shell Electron Pair Reaction

Answer

Variable Shell Electron Pair Resonance

Answer

Valence Shell Energy Regulation

Question 2

How does the VSEPR theory explain the shape of molecules?

Accepted Answer

By considering the repulsion between electron pairs in the valence shell

Answer

By taking into account the size of the atoms in the molecule

Answer

By analyzing the bond angles between atoms

Answer

By focusing on the electronegativity of the atoms in the molecule

Question 3

What is the basic premise of VSEPR theory?

Accepted Answer

Electron pairs in the valence shell repel each other to minimize repulsion

Answer

Electron pairs in the valence shell attract each other to form stable bonds

Answer

Electron pairs in the valence shell rotate around the nucleus to form bonds

Answer

Electron pairs in the valence shell move randomly to form molecules

Question 4

According to VSEPR theory, how does the number of lone pairs affect the molecular shape?

Accepted Answer

Lone pairs repel more strongly than bonding pairs, affecting the molecular geometry

Answer

Lone pairs have no effect on molecular shape

Answer

Lone pairs attract bonding pairs, stabilizing the structure

Answer

Lone pairs increase the bond angle between atoms in the molecule

Question 5

In VSEPR theory, what is the ideal bond angle for a molecule with a trigonal planar molecular geometry?

Accepted Answer

120 degrees

Answer

90 degrees

Answer

60 degrees

Answer

180 degrees

Question 6

How does the VSEPR theory explain the difference between linear and bent molecular geometries?

Accepted Answer

Due to the presence of lone pairs on the central atom, causing deviations from ideal bond angles

Answer

By focusing on the bond lengths in the molecule

Answer

By considering the size of the atoms in the molecule

Answer

By analyzing the electronegativity of the atoms in the molecule

Question 7

How does VSEPR theory account for the repulsion between electron pairs around the central atom?

Accepted Answer

By assuming that electron pairs repel each other to be as far apart as possible

Answer

By assuming that electron pairs rotate around the nucleus

Answer

By assuming that electron pairs attract each other to form stable bonds

Answer

By assuming that electron pairs move randomly around the central atom

Question 8

What is the electron geometry of a molecule with four electron groups around the central atom according to VSEPR theory?

Accepted Answer

Tetrahedral

Answer

Octahedral

Answer

Linear

Answer

Trigonal planar

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