Periodic Trends

Question 1

Atomic radius?

Answer 1

increases down a group and decreases across a period

Question 2

Why does Atomic Radius decrease across a period?

Answer 2

Coloumbic attraction increases

Question 3

High Columbic Attraction means?

Answer 3

High IE, High Electronegativity, “Low” Atomic Radius

Question 4

Which element is largest in terms of atomic radius?

Answer 4

Cesium

Question 5

Ionization energy?

Answer 5

Increases going up and increases across a period

Question 6

Which element has highest ionization energy?

Answer 6

Helium

Question 7

What is ionization energy

Answer 7

How difficult it is to remove an electron

Question 8

Electronegativity

Answer 8

How much a nucleus attracts electron pairs

Question 9

First ionization energy

Answer 9

energy required to remove an electron

Question 10

Most electronegative element

Answer 10

Fluorine

Question 11

Ionic radius

Answer 11

increases from left to right generally, size of positive ions gradually decrease from left to right, size of negative ions gradually decrease from left to right, size of ions increase from top to bottom

Question 12

Group 1

Answer 12

Largest cation radius

Question 13

Group 15

Answer 13

largest anion radius

Question 14

Metal reactivity

Answer 14

Is like atomic radius trend, most reactive metal is francium

Question 15

Nonmetal reactivity

Answer 15

Is like electronegativity trend, most reactive nonmetal is Fluorine