Molecular Geometry

Question 0

CH4

Answer 0

Tetrahedral

109.5

Question 1

H2O

Answer 1

Angular

104.5

Question 2

Cl3Br

Answer 2

Trigonal planar

120

Question 3

NH3

Answer 3

Trigonal pyramidal

107.3

Question 4

intramolecular bond

Answer 4

the bond between atoms within molecules`

Question 5

valency

Answer 5

the number of electrons gained, lost or shared to complete the outermost energy level

Question 6

covalent bond

Answer 6

a bond that occurs between 2 atoms which share at least one pair of electrons

Question 7

pure covalent bond

Answer 7

the electron pair is shared equally between the 2 atoms. It occurs between 2 atoms of the same element bond with each other
also known as a non-polar covalent bond
there is a symmetrical distribution of charge

Question 8

electronegativity

Answer 8

is a measure of the tendency of an atom to attract a bonding pair of electrons

Question 9

polar covalent bond

Answer 9

the bonding electron pair is not shared equally between 2 atoms
occurs when the 2 atoms involved have different electronegativity
Also referred to as dipole molecule

Question 10

ionic bond

Answer 10

the transfer of electrons and subsequent electrostatic attraction
Don’t conduct electricity when solid. Only when in a solution or molten

Question 11

difference in electronegativities

Answer 11

∆EN = largest EN - smallest EN

Question 12

metallic bond

Answer 12

being between a positive kernel and a sea of delocalised electrons

Question 13

VSEPR

Answer 13

valence shell electron repulsion theory

Question 14

Valence electrons

Answer 14

Electrons found in the outermost energy level

Group number

Question 15

Dative covalent bond

Answer 15

A lone pair of electrons is shared with another atom with an empty outermost orbital
Include the + sign
Include the –> pointing to the empty orbital atom