18 Questions
Which hydride exhibits virtually non-polar bonding?
PH3
What type of bonding occurs in H2O and NH3?
Hydrogen bonding
Which hydride exhibits a pyramidal shape?
PH3
What property is affected by intermolecular hydrogen bonding in H2O and NH3?
Higher boiling point
Why is B–Cl bond considered polar?
Unequal sharing of electrons
Which hydride shows polar covalent bonding?
NH3
What type of atoms does a Hydrogen atom need to be bonded to in order to form a hydrogen bond?
Nitrogen, Oxygen, or Fluorine
Which force is considered the strongest form of intermolecular force?
Hydrogen Bonding
Why does water have a high boiling point?
Due to the need to break strong hydrogen bonds
What is the definition of electronegativity?
The relative attraction of an atom for shared electrons in a covalent bond
What causes the difference in bond angle between ammonia (NH3) and silane (SiH4)?
Presence of lone pairs of electrons
In which two small molecules do each have four electron pairs in the valence shell of the central atom?
Ammonia (NH3) and Silane (SiH4)
What causes hydrogen bonds to form between molecules with Hydrogen and Nitrogen, Oxygen, or Fluorine?
The partial positive charge on Hydrogen and electronegative atoms
What determines the boiling point of a liquid with hydrogen bonding?
The amount of energy needed to break hydrogen bonds
Why are hydrogen bonds considered dipole-dipole attractions?
Because they involve partial positive and negative charges
How do Hydrogen bonds act as bridges between molecules?
By attracting electronegative atoms in different molecules
What makes Hydrogen bonding different from other types of intermolecular forces?
The large electronegativity difference between Hydrogen and other atoms
Why does a molecule need to have a large electronegativity difference for hydrogen bonding to occur?
To induce a partial positive charge on Hydrogen for attraction
Explore the formation of sigma and pi bonds in a Nitrogen molecule, and distinguish between Ionic and Covalent compounds based on their properties like melting points, state at room temperature, hardness, and electrical conductivity.
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