Atomic Theory

Question 1

Across a period atomic radius……….

Answer 1

Decreases

Question 2

Why does AR decrease

Answer 2

The core charge increases because the amount of protons increase. The amount of shells stays the same.

Question 3

Group one is called the

Answer 3

Alkali metals

Question 4

Group 7 is called the

Answer 4

Halogens

Question 5

Characteristics of alkali metals

Answer 5

Have one valence electrons so are very reactive

Question 6

Characteristics of halogens

Answer 6

Want one valence electrons so Are very reactive

Question 7

Electronegativity is

Answer 7

The ability of an atom to attract electrons

Question 8

From top to bottom in a group electronegativity

Answer 8

Decrease

Question 9

From left to right in the periodic table electronegativity

Answer 9

Increases

Question 10

Group 2 are called

Answer 10

Alkaline earth metals

Question 11

Alkaline earth metals characteristics

Answer 11

Shiny, Hi reactivity but less than group one, higher melting/boiling points than group one, increases in reactivity down the group

Question 12

The sub shell order is

Answer 12

S,P,D,F