VSEPR, polarity, lewis dot & periodic trends

Front

What is VSEPR theory?

Back

VSEPR (Valence Shell Electron Pair Repulsion) theory is a model 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 does polarity in molecules refer to?

Back

Polarity refers to the distribution of electrical charge over the atoms joined by the bond. A polar molecule has a net dipole moment due to the presence of polar bonds that do not cancel out.

Front

What is a Lewis dot structure?

Back

A Lewis dot structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

Which element is more electronegative than Sulfur (S)?

Back

Oxygen (O) is more electronegative than Sulfur.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of chemical bond where a pair of electrons is unequally shared between two atoms.

Front

What shape does a molecule with a trigonal planar geometry have?

Back

A molecule with a trigonal planar geometry has three bonds arranged around a central atom at 120-degree angles.

Front

What is the shape of BF3?

Back

BF3 has a trigonal planar shape.

Front

What is a triple bond?

Back

A triple bond is a type of chemical bond where three pairs of electrons are shared between two atoms.

Front

What is the difference between polar and non-polar molecules?

Back

Polar molecules have a net dipole moment due to uneven distribution of electrons, while non-polar molecules have an even distribution of electrons.