Flash cards Introduction to Covalent Bonding and Lewis Structures

These flashcards cover key concepts about covalent bonding, Lewis structures, and molecular polarity, based on lecture notes.

A covalent bond is formed by the __ of electrons between two atoms.

sharing

are discrete groups of atoms held together by covalent bonds.

Molecules

Unshared electron pairs are also known as __ pairs or lone pairs.

nonbonded

Atoms share electrons to achieve the electronic configuration of the __ gas closest to them.

noble

Hydrogen forms __ bond due to its one valence electron.

one

Atoms with __ or more valence electrons form enough bonds to achieve an octet.

four

The predicted number of bonds formula is __ = 8 − number of valence electrons.

predicted number of bonds

The general rule for bonding elements is: Number of bonds + Number of __ = 4.

lone pairs

Lewis structures show the __ of all valence electrons.

location

To draw Lewis structures, only __ electrons should be included.

valence

For main group elements, give every element (except H) an octet of __.

electrons

In a Lewis structure for CH3Cl, you will need a total of __ valence electrons.

14

In a multiple bond, one lone pair of electrons can be converted into one __ pair of electrons.

bonding

When drawing Lewis structures for polyatomic ions, add one electron for each __ charge.

negative

Resonance structures describe two Lewis structures with the same arrangement of atoms but different arrangements of __.

electrons

To determine molecular polarity, you check the __ of individual bonds and the overall shape.

polarity

Electronegativity measures an atom's __ for electrons in a bond.

attraction