Chapter 5-Periodic Table

Question 0

Main group elements

Answer 0

IA-VIIIA

Question 1

Periodic law

Answer 1

Elements in the same group have similar chemical properties

Question 2

Transition elements

Answer 2

In between the main group elements on the periodic table

Question 3

Reactivity of metals increases as you go from

Answer 3

Right to left in a period

Top to bottom in a group

Question 4

Most reactive metals

Answer 4

Alkali metals

Cs, Fr

Question 5

Reactivity of non metals increases as you go from

Answer 5

Left to right in a period
Bottom to top in a group
EXCLUDING NOBLE GASSES

Question 6

Most reactive non metals

Answer 6

Halogens

Fl

Question 7

Atomic radius increases as you go from

Answer 7

Top to bottom in a group

Right to left in a period

Question 8

Atomic radius

Answer 8

1/2 the distance between the nuclei of identical atoms that are bonded together

Question 9

Non metals typically form

Answer 9

Anions

Question 10

Metals typically form

Answer 10

Cations

Question 11

Ionization

Answer 11

Any process that results in the formation of an ion

Question 12

Ionization energy

Answer 12

Energy required to remove one electron from a neutral atom of an element

Question 13

Ionization energy increases as you go from

Answer 13

Left to right in a period

Bottom to top in a group

Question 14

Electron affinity

Answer 14

The energy change that occurs when an electron is acquired by a neutral atom

Question 15

_____ gain electrons easiest

Answer 15

Halogens

Question 16

Which element has most negative electron affinity?

Answer 16

F

Question 17

Formation if a cation means

Answer 17

Decrease in atomic radius

Question 18

Formation of an anion means

Answer 18

Increase in atomic radius

Question 19

Electronegativity

Answer 19

Measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound

Question 20

What is the most electronegative element?

Answer 20

F - 4.0

Question 21

Electro negativity increases as you go from

Answer 21

Left to right in a period
Bottom to top in a group
EXCLUDING NOBLE GASSAS

Question 22

Octet rule

Answer 22

Atoms are most stable when they have eight valence electrons

Question 23

Johann doberiener

Answer 23

Organized elements into triads

Question 24

Law of triads

Answer 24

Middle element in the triad was an average of the properties of the other two

Question 25

John newlands

Answer 25

Law of octaves

First to put elements into table

Question 26

Dmitri Mendeleev

Answer 26

Organized elements according to their properties

Ordered by atomic mass

Question 27

Henry Moseley

Answer 27

Discovered that it was better to arrange elements by atomic number