Lewis and Molecular Structures

Question 1

Chemical bonding involves the _____ of atoms

Answer 1

valence electrons

Question 2

Electronegativiety increases in which direction on the periodic table

Answer 2

right and up

Question 3

help us to focus on the valence electrons – those that can participate in bonding

Answer 3

lewis symbols

Question 4

in ______, we model the electrons as being transferred in order to achieve low energy configurations

Answer 4

ionic bonding

Question 5

we use ____ to show ions in ionic bonding lewis structures

Answer 5

brackets

Question 6

In ______, we model the electrons as being shared in order to achieve low energy configurations

Answer 6

covalent bonding

Question 7

covalent bonds share electrons to reach ________

Answer 7

noble-gas electron configurations

Question 8

_______ effectively share electrons to reach full octets

Answer 8

nonmetals

Question 9

shows the number and identity of all of the atoms in a compound, but not which atoms are bonded to each other

Answer 9

molecular formula

Question 10

shows the connectivity between atoms, as well as the location of al bonding and nonbonding valence electrons

Answer 10

lewis structure

Question 11

the least electronegative atom

Answer 11

central atom

Question 12

contains four electrons in two 2e- bonds

Answer 12

double bond

Question 13

contains six electrons in three 2e- bonds

Answer 13

triple bond

Question 14

the sum of the ___________ on all atoms in a given molecule or ion mus equal the overall charge on the species

Answer 14

formal charge

Question 15

molecules with the same molecular formula but are different compounds with different chemical and physical properties

Answer 15

isomers

Question 16

different sequence of bonded atoms

Answer 16

structural isomers

Question 17

same shape, different atom order

Answer 17

geometric isomers

Question 18

defined by both bonding and nonbonding electron groups

Answer 18

electron-group arrangement

Question 19

is the three-dimensional arrangement of nuclei joined by the bonding groups. THis is defined only by the relative positions of the nuclei

Answer 19

molecular shape

Question 20

define A,X,E

Answer 20

A=central atom, X=surrounding atom, E=nonbonding valence electron group