Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

How many valence electrons does Oxygen have?

Back

Oxygen has 6 valence electrons.

Front

What does the VSEPR theory stand for?

Back

VSEPR stands for Valence Shell Electron Pair Repulsion theory.

Front

What does the VSEPR theory predict?

Back

The VSEPR theory is used to predict the molecular shape of a molecule based on the repulsion between electron pairs.

Front

What is the significance of the '2' in the chemical formula MgBr₂?

Back

The '2' indicates that there are 2 bromide ions for every magnesium ion in the ionic compound magnesium bromide.

Front

Why do chemical bonds form?

Back

Chemical bonds form to fill the valence shell of electrons for the elements involved, achieving stability.

Front

What is an ionic bond?

Back

An ionic bond is a type of chemical bond that occurs when one atom transfers electrons to another atom, resulting in the formation of charged ions.

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond that involves the sharing of electron pairs between atoms.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to form bonds in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Front

What is the difference between a polar and nonpolar covalent bond?

Back

A polar covalent bond occurs when electrons are shared unequally between atoms, while a nonpolar covalent bond occurs when electrons are shared equally.