Lewis structures

Front

What is the octet rule?

Back

The octet rule states that most elements need 8 valence electrons to be stable.

Front

How many valence electrons does hydrogen need to be stable?

Back

Hydrogen needs 2 electrons in its outer energy level to be stable.

Front

What type of bond is formed when three pairs of electrons are shared?

Back

A triple bond.

Front

What type of electrons are used when drawing Lewis structures?

Back

Only valence electrons are used.

Front

What is a covalent bond?

Back

A covalent bond is a bond that shares electrons between nonmetals.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with other atoms and are crucial for forming stable compounds.

Front

What is a single bond in terms of electron sharing?

Back

A single bond is formed when one pair of electrons is shared between two atoms.

Front

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

Back

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

Front

What is the role of lone pairs in Lewis structures?

Back

Lone pairs are pairs of valence electrons that are not shared with another atom and can affect the shape and reactivity of molecules.

Front

How do you determine the central atom in a Lewis structure?

Back

The central atom is usually the least electronegative element or the one that can form the most bonds.