AP24 Q2 Class 9 (Polarity; Hybridization-Valence Bond Theory)

Front

What is polarity in chemistry?

Back

Polarity refers to the distribution of electrical charge over the atoms joined by the bond. A polar bond occurs when there is a significant difference in electronegativity between the two atoms, leading to a dipole moment.

Front

Which element has the weakest attraction for electrons in a chemical bond?

Back

Sulfur (S) has the weakest attraction for electrons among the elements listed.

Front

What is hybridization in the context of valence bond theory?

Back

Hybridization is the concept of mixing atomic orbitals to form new hybrid orbitals that can accommodate the bonding of atoms in a molecule.

Front

How many sp3 hybridized atoms are present in the structure of C8H8SBrN4O1-?

Back

There are 6 sp3 hybridized atoms in the structure of C8H8SBrN4O1-.

Front

How many sp hybridized atoms are present in the structure of C8H8SBrN4O1-?

Back

There are 2 sp hybridized atoms in the structure of C8H8SBrN4O1-.

Front

What is the significance of sigma bonds in a molecule?

Back

Sigma bonds are the first bonds formed between two atoms and are characterized by head-on overlapping of orbitals. They provide the primary framework for the molecular structure.

Front

How many sigma bonds are present in the molecule C8H8SBrN4O1-?

Back

There are 23 sigma bonds in the molecule C8H8SBrN4O1-.

Front

What is the best indication of whether a compound is ionic?

Back

The best indication of whether a compound is ionic is its electrical conductivity in the molten phase.

Front

What is the VSEPR theory and its purpose?

Back

VSEPR (Valence Shell Electron Pair Repulsion) theory is used to predict the geometry of individual molecules based on the repulsion between electron pairs in the valence shell of the central atom.

Front

What is electronegativity and how does it affect bond polarity?

Back

Electronegativity is the tendency of an atom to attract electrons in a bond. A greater difference in electronegativity between two bonded atoms results in a more polar bond.