Ionic Radius Trends and Multiple Ionization Energies

Ionic Radius Trends and Multiple Ionization Energies

Presentation

•

Chemistry

•

10th - 11th Grade

•

Easy

•

NGSS

HS-PS1-1, HS-PS1-2

Standards-aligned

Created by

Kristen Vanderveen

Used 24+ times

FREE Resource

22 Slides • 21 Questions

1

Ionic Radius Trends and Multiple Ionization Energies

Bromfield Honors Chemistry

2

Drag and Drop

Cations have a

charge and anions have a

charge.

Drag these tiles and drop them in the correct blank above

positive

negative

neutral

unpredictable

3

Why do atoms gain or lose electrons?

4

To be isoelectronic with a noble gas

Atoms will gain or lose electrons...

5

Completely filled sublevels

To be isoelectronic with a noble gas

Atoms will gain or lose electrons...

6

Octet rule

8 valence electrons

To be isoelectronic with a noble gas

Atoms will gain or lose electrons...

7

Multiple Choice

Question image

Sr forms an ion with a charge of _________.

1

+1

2

+2

3

-1

4

-2

8

Multiple Choice

Question image

Br forms an ion with a charge of ________

1

-1

2

-2

3

+1

4

+2

9

Fill in the Blanks

Type answer...

10

Fill in the Blanks

Type answer...

11

Fill in the Blanks

Type answer...

12

Ionic Radius Trends

13

web page not embeddable

Classroom Resources | Periodic Trends: Ionization Energy, Atomic Radius & Ionic Radius | AACTiconiconiconiconicon

You can open this webpage in a new tab.

14

Open Ended

At the simulation link, select a group 1 element and form a cation by pulling off a valence electron. What do you observe?

https://teachchemistry.org/classroom-resources/periodic-trends-simulation

Type response here

15

16

Open Ended

Question image

How does the radius of a cation compare to the radius of its parent atom?

Type response here

17

Cations have a smaller radius than the parent atom

18

Cations have a smaller radius than the parent atom

Why?

Fewer electrons!
Fewer electron:electron repulsions.
Fewer occupied energy levels, so the remaining electrons experience a stronger Coulombic attraction to the nucleus

19

20

Open Ended

Question image

How does the radius of an anion compare to the radius of the parent atom?

Type response here

21

Anions typically have a larger radius than the parent atom

Why?

More electrons

More electron:electron repulsions

22

23

The cations get smaller, then the anions get smaller

Period trend (L ⟶ R)

Ionic radius INCREASES down a column

Group trend

Ionic radius trends

24

Multiple Choice

Which of the following would have the larger radius?

1

Ca

2

Ca²⁺

25

Multiple Choice

Which of the following would have the larger radius?

1

P

2

P^3-

26

Multiple Choice

Which of the following would have the larger radius?

1

I^-

2

Cl^-

27

Multiple Choice

Which of the following would have the larger radius?

1

P^3-

2

S^2-

28

Multiple Choice

Which of the following would have the larger radius?

1

Ca²⁺

2

Cl^-

29

Reorder

Sort the ions in order of INCREASING ionic radius

Li⁺

K⁺

Rb⁺

I^-

Te^2-

1

2

3

4

5

1

2

3

4

5

30

Multiple Ionization Energies

31

You can have as many ionization energies as there are electrons in an atom

32

A⁺ + IE₂ ⟶ A²⁺ + e-

Second IE, IE₂

A + IE₁ ⟶ A⁺ + e-

First IE, IE₁

Multiple ionization energies

33

It gets harder and harder to remove additional electrons

Each successive ionization energy is larger than the previous IE

34

There are fewer electrons

There are fewer occupied energy levels

Each successive ionization energy is larger than the previous IE

Remaining electrons experience a stronger Coulombic attraction to the nucleus

35

Na

Removing the valence electron from the 3s orbital

is pretty easy

36

Na

Removing the valence electron from the 3s orbital

is pretty easy

Removing the next electron

from the 2p sublevel takes A LOT of energy!

37

Na

Once all the valence electrons have been removed, there is a BIG jump in the next IE

38

Dropdown

Given the following ionization energies, this atom has

valence electronsI₁: 1086

I₂: 2350

I₃: 4620

I₄: 6220

I₅: 38,000

I₆: 47,261

39

Multiple Choice

Given the following ionization energies for an atom, determine the atom's identity.

I₁: 899

I₂: 1757

I₃: 14,850

I₄: 21,005

1

Li

2

Be

3

B

4

C

40

Multiple Choice

Question image

Why is there a large jump in ionization energy between IE₁ and IE₂ for lithium?

1

the valence electrons are harder to lose than core electrons

2

the valence electrons are easier to lose than core electrons

41

Drag and Drop

Question image

We expect to see a big jump in ionization energies between

for phosphorus.

Drag these tiles and drop them in the correct blank above

IE 1 and IE 2

IE 6 and IE 7

IE 7 and IE 8

IE 5 and IE 6

IE 2 and IE 3

IE 3 and IE 4

IE 4 and IE 5

42

Dropdown

Question image

According to the ionization energy data, element W has

valence electrons.

43

Open Ended

Summarize the key points from today's class

Type response here

Ionic Radius Trends and Multiple Ionization Energies

Bromfield Honors Chemistry

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