VSEPR and Periodic Trends Flashcard

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 the electron pairs in the valence shell of the central atom.

Front

What is the Electron Geometry of a molecule with 6 electron pairs?

Back

Octahedral.

Front

What molecular shape corresponds to 3 bonding pairs and 1 lone pair?

Back

Trigonal pyramidal.

Front

Which element has a higher electronegativity: Carbon (C) or Potassium (K)?

Back

Carbon (C) has a higher electronegativity than Potassium (K).

Front

What is the trend in electronegativity across a period in the periodic table?

Back

Electronegativity increases across a period from left to right.

Front

What is the trend in atomic radius down a group in the periodic table?

Back

Atomic radius increases down a group due to the addition of electron shells.

Front

What is the shape of a molecule with 2 bonding pairs and 2 lone pairs?

Back

Bent.

Front

Which element has the largest atomic radius in Group 18?

Back

Radon (Rn) has the largest atomic radius in Group 18.

Front

What is the molecular shape of a molecule with 4 bonding pairs and no lone pairs?

Back

Tetrahedral.

Front

What is the relationship between bond strength and electronegativity?

Back

Generally, as electronegativity increases, bond strength also increases due to stronger attraction between atoms.