Electron Configuration And Lewis Structures

Question 1

binding energy depends on

Answer 1

n and l

Question 2

difference in binding energy due to having a multi electron system

Answer 2

based on z effective, not z

Question 3

Hunds Rule

Answer 3

when e- are added to states if the same energy, a single electron enters each state before a second does

Question 4

paramagnetic

Answer 4

energy state has an unpaired electron

Question 5

diamagnetic

Answer 5

no unpaired electron

Question 6

most stable electron configurations

Answer 6

filled or 1/2 filled

Question 7

aufbau principle

Answer 7

fill energy state 1 at a time, starting with fhe lowest energy

Question 8

anion

Answer 8

ion that gained an electron and has a negative charge

Question 9

cation

Answer 9

ion that lost an electron and is positively charged

Question 10

transition metals lose what first

Answer 10

4s

Question 11

relationship between IE2 and IE

Answer 11

IE2 is always greater than IE

Question 12

when an ion is by itself charge =

Answer 12

oxidation state

Question 13

isoelectronic

Answer 13

same electron configuration

Question 14

Zeff

Answer 14

effective nuclear charge

Question 15

Zeff trend (and why)

Answer 15

▪ increase across periodic table (bc more protons)

▪decrease down periodic table (bc n inc)

Question 16

ionization energy is always a ______ value

Answer 16

positive

Question 17

ionization energy trends

Answer 17

▪inc across periodic table

▪dec down periodic table

Question 18

Electron affinity

Answer 18

ability of an atom to gain electrons

Question 19

electron affinity = -______

Answer 19

change in energy

Question 20

positive electron affinity means

Answer 20

atom wants an electron

Question 21

electron affinity trends (and why)

Answer 21

▪inc across periodic table
▪dec going down
▪bc Zeff

Question 22

electronegativity

Answer 22

the net ability of an atom to attract an electron from another atom

Question 23

electron acceptor

Answer 23

atom with high electronegativity

Question 24

electron donor

Answer 24

atom with low electronegativity

Question 25

electronegativity trends

Answer 25

▪inc across | ▪dec down

Question 26

msot electronegative element

Answer 26

flourine

Question 27

noble gas electronegativity

Answer 27

0

Question 28

atomic radius trend (and why)

Answer 28

▪Dec across period table (bc Zeff inc) | ▪inc down periodic table (bc n inc)

Question 29

electronegativity inc by what amount across the periodic table?

Answer 29

.5

Question 30

difference of electronegativity causes

Answer 30

a polar molecule

Question 31

ionic bonds

Answer 31

transfer of one or more electrons from one atom to another with a bond

Question 32

ionic bonds are caused by

Answer 32

coulombic attraction

Question 33

covalent bonding

Answer 33

▪a pair of electrons are shared between 2 atoms

Question 34

on covelnt bond graph, the x intercept =

Answer 34

bond length (sharing electrons at a good distance)

Question 35

on covelent binding graph, difference between x intercept and asymptote =

Answer 35

dissociation energy

Question 36

dissociation energy

Answer 36

energy required to seperate bonded atoms

Question 37

deeper well in covalent bonding graph=

Answer 37

stronger bond

Question 38

energy of interaction

Answer 38

nuclear-nuclear repulsion + electron-nucleur attraction + electron-electron repulsion

Question 39

polar covalent

Answer 39

unequal sharing of electrons between 2 atoms w a different electronegativities

Question 40

difference between electronegativities to form a polar covalent bond

Answer 40

.4 < x< 1.7

Question 41

octet rule

Answer 41

electrons distributed in such a way that each element is surrounded by 8 electrons

Question 42

coreect lewis structure has the ________ formal charge

Answer 42

least complicated

Question 43

if a lewis structure only has single bonds it has no ______

Answer 43

resonance structures

Question 44

octet rule exceptions

Answer 44

▪odd number of electrons ▪octet deficient molecules ▪valence shell expansion

Question 45

radical species

Answer 45

molecules with an unpaired electron

Question 46

valence shell expansion

Answer 46

element with n greater than or equal to 3 can have more than 8 electrons around the central atom

Question 47

ionic bonds are between a

Answer 47

mental and nonmetal

Question 48

less than an octet most often occurs with the elements

Answer 48

▪Boron (B) ▪Beryllium (Be) ▪aluminum (Al)

Question 49

covalent bondimg occurs between

Answer 49

2 nonmetals

Question 50

orbital filling exceptions

Answer 50

Cr, Cu

Question 51

Cr electron configuration

Answer 51

▪6 total electrons ▪4s orbital filled with one ▪3d each filled with one

Question 52

Cu electron configuration

Answer 52

▪11 total electrons ▪4s with 1 ▪3d completely filled

Question 53

group with the highest electron affinity

Answer 53

halides

Question 54

methyl group

Answer 54

CH3