Chapter 5 - Electrons and bonding

Question 1

Principle quantum number (n)

Answer 1

a number representing the relative overall energy of each orbital, which increases with distance from nucleus. The sets of orbitals with the same n value are referred to as electron shells or energy levels

Question 2

Atomic orbitals

Answer 2

a region around the nucleus that can hold up to two electrons, with opposite spins

Question 3

Electron configuration

Answer 3

a shorthand representation that shows how electrons occupy sub-shells in an atom

Question 4

Ionic bonding

Answer 4

the electrostatic attraction between positive and negative ions

Question 5

Giant ionic lattice

Answer 5

a 3D structure of oppositely charged ions, bonded together by strong ionic bonds

Question 6

Covalent bond

Answer 6

the strong electrostatic attraction between a shared pair of electrons and the nuclei of the bonded atoms

Question 7

Displayed formula

Answer 7

a formula showing the relative positioning of all the atoms in a molecule and the bonds between them

Question 8

Lone pair

Answer 8

an outer shell pair of electrons that is not involved in chemical bonding

Question 9

Dative covalent or coordinate bond

Answer 9

a shared pair of electrons in which the bonded pair has been provided by one of the bonding atoms only