Periodic Trends

Question 1

___________ discovered that each element has a unique atomic number (z)

Answer 1

Moseley

Question 2

Electronegativity increases

Answer 2

Up and to the righteous

Question 3

Size increases

Answer 3

Down and to the left

Question 4

Effective nuclear charge (Zeff)

Answer 4

The attraction between a nucleus and the valance electrons.

Question 5

The nucleus is shielded from the valance elections by the

Answer 5

Inner electrons (s)

Question 6

Effective nuclear charge =

Answer 6

Atomic number - inner electrons

Question 7

Effective nuclear charge increases

Answer 7

From left to right

Question 8

Cations are always smaller than their parent atom because

Answer 8

Cations lose electrons and therefore lose an energy level

Question 9

Why are anions always larger than its parent atom

Answer 9

Because repulsion between electrons become greater when outer shell is completed, therefore making it swell and become bigger

Question 10

Ionization energy

Answer 10

Energy required to remove an electron from an atom in the gas phase

Question 11

Electronegativity

Answer 11

A measure of an atoms attraction to an electron

Question 12

Electron affinity

Answer 12

The energy released when an atom gains an electron in the gas phase to form a negative ion

Question 13

Ionization energy equation

Answer 13

X -> x+ + e-

Question 14

Electron affinity equation

Answer 14

X+e- = x-

Question 15

Bonding atomic radious is equal to

Answer 15

Half the distance between two bonded nuclei

Question 16

Metals tend to ______ electrons and become ______________

Answer 16

Lose; cations

Question 17

Nonmetals tend to _____ electrons and become ______________

Answer 17

Gains; anions

Question 18

Isoelectronic series

Answer 18

A group of ions all containing the same number of electrons

Question 19

Metallic character increases

Answer 19

Down and to the left

Question 20

Group 1a

Answer 20

Alkali metals

Question 21

Group 2a

Answer 21

Alkaline earth metals

Question 22

Group 7a

Answer 22

Halogens

Question 23

Metals

Answer 23

Listed good conductors of heat and electricity and malleable and ductile

Question 24

No metals

Answer 24

No list or poor conductors and nonmalleable

Question 25

Metalloids

Answer 25

Luster but brittle

Question 26

Nonmetal oxides

Answer 26

Carbon 
Nitrogen
Phosphorus 
Sulfur
(Plus oxygen)

Question 27

Metal oxide + water =

Answer 27

Base (metal hydroxide)

Question 28

Metal oxide + acid =

Answer 28

Salt and water

Question 29

Nonmetaloxide and water=

Answer 29

Acid

Question 30

Nonmetal oxide and base=

Answer 30

Salt and water

Question 31

Bigger compounds have ______ boiling points

Answer 31

Higher

Question 32

As an atoms radius decreases to

Answer 32

Ionization energy increases

Question 33

Mendeleev and Meyer arranged the table based on

Answer 33

Chemical similarities