Understanding Drago's Rule and Hybridization

What is the primary concept of hybridization?

• Mixing of atomic orbitals

• Separation of atomic orbitals

• Formation of ionic bonds

• Breaking of covalent bonds

Which type of hybridization is present in NH3?

• sp

• sp2

• sp3

• sp3d

According to Drago's Rule, which condition must be met for no hybridization to occur?

• Central atom must be from the third to the seventh period

• Central atom must have no lone pairs

• Central atom must be from the first period

• Electronegativity of surrounding atoms must be more than 2.5

Why does no hybridization occur in PH3?

• PH3 has a high electronegativity

• Electronegativity of hydrogen is less than 2.5

• PH3 is from the first period

• PH3 has no lone pairs

What is the bond angle in PH3 due to the lack of hybridization?

• 93.5°

• 107°

• 180°

• 120°

Which molecule has a pyramidal geometry?

• PH3

• NH3

• H2O

• CO2

Why is NH3 a better base compared to PH3?

• NH3 has a lower percentage of s character

• NH3 has a higher percentage of s character

• PH3 has a higher bond angle

• PH3 has more lone pairs

What is the percentage of s character in NH3's hybrid orbitals?

• 50%

• 25%

• 75%

• 100%

Which statement is true about PH3?

• It has a bond angle of 107°

• It is a strong base

• It forms bonds through pure p orbitals

• It undergoes sp3 hybridization

What happens to electronegativity when the percentage of s character increases?

• Electronegativity decreases

• Electronegativity remains the same

• Electronegativity becomes zero

• Electronegativity increases