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Laabri

Unit 3 Electron Configuration & Periodic Trends Formative 2025

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Asemmisa {{asɛmmisaAhyɛnsode}}
1.

Match the following vocabulary to the correct definition.

Draggable itemarrow_right_altCorresponding Item

Cation

arrow_right_alt

Group you would find Rutherfordium

4

arrow_right_alt

Number of electrons a full p orbital hold

Ionization Energy

arrow_right_alt

Number of valence electrons the ground state of chlorine

Alkaline Earth Metals

arrow_right_alt

The name of the quantum number that indicates the sublevel of electrons

Magnetic

arrow_right_alt

The quantum number that represents the direction in which the electrons are traveling with either up and down arrows: +1/2, -1/2

Ionic

arrow_right_alt

The name of the quantum number that indicates the orientation of an orbital around the nucleus

Noble Gas

arrow_right_alt

The name of the quantum number that indicates the size of the atom

6

arrow_right_alt

Group of elements that are considered to be electronically perfect

Azimuthal

arrow_right_alt

Bond that forms between anions and cations as a result of the transfer of valence electrons

Atomic Radius

arrow_right_alt

the name of the group that has 2 valence electrons and is found in compounds in nature

Principle

arrow_right_alt

The name of the group of elements that has 1 valence electron, from very strong bases, and explode in water

d

arrow_right_alt

Bond that forms by the sharing of electrons between two nonmetals

Alkali Metals

arrow_right_alt

Electrons are found in the last main level of an atom

Electronegativity

arrow_right_alt

Group where you would find radon

7

arrow_right_alt

Ion that tungston will form

Covalent

arrow_right_alt

Block you would find fluorine

18

arrow_right_alt

Block you would find iridium

Valence

arrow_right_alt

One-half the distance between nuclei of identical atoms that are bonded together

p

arrow_right_alt

The energy required to remove the valence electrons from an atom

Spin

arrow_right_alt

The measure of the ability of an atom in a chemical compound to attract electrons.

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

Match the scientist to their correct contribution to the quantum theory

Draggable itemarrow_right_altCorresponding Item

Bohr

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Published the first periodic table

Louis De Broglie

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Said that it is not possible to know both the location and the speed of an electron at the same time.

Max Planck

arrow_right_alt

He said that electrons act like waves with certain frequencies. He studied the photoelectric effect

Erwin Schrodinger

arrow_right_alt

His works lead to the Periodic Law, which states that the physical and chemical properties of the elements are periodic functions of their atomic numbers

Hund

arrow_right_alt

Said that electrons have both wave and particle nature

Dmitri Mendeleev

arrow_right_alt

Suggested that hot objects emit energy in small, specific amounts called Quanta

Heisenberg

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He stated that electromagnetic radiation had wavelike properties, that particles "stream," and each particle of light carries a quantum of energy

Albert Einstein

arrow_right_alt

Said that electrons remain unpaired as long as possible

Henry Moseley

arrow_right_alt

Said that electrons travel around the nucleus like planets orbiting the sun

Asemmisa {{asɛmmisaAhyɛnsode}}
3.

Which of the following has 4 valence electrons?

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

Which of the following has 2 valence electrons?

Asemmisa {{asɛmmisaAhyɛnsode}}
5.

Which of the following is an transition metal?

Asemmisa {{asɛmmisaAhyɛnsode}}
6.

Which of the following has 6 valence electrons?

Asemmisa {{asɛmmisaAhyɛnsode}}
7.

Which of the following is a halogen?

Asemmisa {{asɛmmisaAhyɛnsode}}
8.

Which of the following is a alkaline earth metal?

Asemmisa {{asɛmmisaAhyɛnsode}}
9.

Which of the following is an alkali metal?

Asemmisa {{asɛmmisaAhyɛnsode}}
10.

Which of the following is an "d" block element?

Asemmisa {{asɛmmisaAhyɛnsode}}
11.

Which of the following is a "s" block element

Asemmisa {{asɛmmisaAhyɛnsode}}
12.

Which of the following is a halogen?

Asemmisa {{asɛmmisaAhyɛnsode}}
13.

Categorize the following elements into the type of ion each would form.

  • iodine

  • tin

  • lithium

  • carbon

  • nickel

  • nitrogen

  • sodium

  • oxygen

  • calcium

  • sulfur

  • chromium

  • silver

  • Cation

  • Anion

Asemmisa {{asɛmmisaAhyɛnsode}}
14.

Categorize the following pairs into the type of bond they would have

  • iodine & chlorine

  • carbon & oxygen

  • lead & sulfur

  • potassium & bromine

  • aluminum & oxygen

  • calcium & nitrogen

  • zinc & selenium

  • phosphorus & iodine

  • Ionic

  • Covalent

Asemmisa {{asɛmmisaAhyɛnsode}}
15.

Match the number of energy levels required to draw each of the following elements.

Draggable itemarrow_right_altCorresponding Item

2

arrow_right_alt

hydrogen

5

arrow_right_alt

carbon

4

arrow_right_alt

tin

3

arrow_right_alt

barium

1

arrow_right_alt

phosphorus

6

arrow_right_alt

calcium

Asemmisa {{asɛmmisaAhyɛnsode}}
16.

Match the following elements to their corresponding number of valence electons.

Draggable itemarrow_right_altCorresponding Item

5

arrow_right_alt

potassium

4

arrow_right_alt

helium

8

arrow_right_alt

aluminum

3

arrow_right_alt

silicon

2

arrow_right_alt

nitrogen

1

arrow_right_alt

krypton

Asemmisa {{asɛmmisaAhyɛnsode}}
17.

Which of the following has the larger atomic radius?

phosphorus or antimony

Asemmisa {{asɛmmisaAhyɛnsode}}
18.

Which of the following has the larger atomic radius?

zinc or titanium

Asemmisa {{asɛmmisaAhyɛnsode}}
19.

Which of the following has the larger atomic radius?

strontium or magnesium

Asemmisa {{asɛmmisaAhyɛnsode}}
20.

Which of the following has the larger atomic radius?

manganese or germanium

Asemmisa {{asɛmmisaAhyɛnsode}}
21.

Which of the following has the larger atomic radius?

boron or fluorine

Asemmisa {{asɛmmisaAhyɛnsode}}
22.

Which of the following has the lower ionization energy?

platinum or nickel

Asemmisa {{asɛmmisaAhyɛnsode}}
23.

Which of the following has the lower ionization energy?

potassium or selenium

Asemmisa {{asɛmmisaAhyɛnsode}}
24.

Which of the following has the lower ionization energy?

calcium or cobalt

Asemmisa {{asɛmmisaAhyɛnsode}}
25.

Which of the following has the lower ionization energy?

silicon or tin

Asemmisa {{asɛmmisaAhyɛnsode}}
26.

Which of the following has the lower ionization energy?

fluorine or iodine

Asemmisa {{asɛmmisaAhyɛnsode}}
27.

Which of the following has the lower electronegativity?

francium or potassium

Asemmisa {{asɛmmisaAhyɛnsode}}
28.

Which of the following has the lower electronegativity?

cadmium or tellurium

Asemmisa {{asɛmmisaAhyɛnsode}}
29.

Which of the following has the lower electronegativity?

arsenic or nitrogen

Asemmisa {{asɛmmisaAhyɛnsode}}
30.

Which of the following has the lower electronegativity?

chlorine or aluminum

Asemmisa {{asɛmmisaAhyɛnsode}}
31.

Which of the following has the lower electronegativity?

calcium or bromine

Asemmisa {{asɛmmisaAhyɛnsode}}
32.

Which of the following has the smaller atomic radius?

fluorine atom or fluorine ion

Asemmisa {{asɛmmisaAhyɛnsode}}
33.

Which of the following has the smaller atomic radius?

H or H+

Asemmisa {{asɛmmisaAhyɛnsode}}
34.

Which of the following has the smaller atomic radius?

O or O-2

Asemmisa {{asɛmmisaAhyɛnsode}}
35.

Which of the following has the smaller atomic radius?

magnesium ion or magnesium atom

Asemmisa {{asɛmmisaAhyɛnsode}}
36.

Which of the following has the smaller atomic radius?

sulfur ion or sulfur atom

Asemmisa {{asɛmmisaAhyɛnsode}}
37.

Match the following to their corresponding number of electrons found in that energy level.

Draggable itemarrow_right_altCorresponding Item

3

arrow_right_alt

2 electrons

4

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8 electrons

2

arrow_right_alt

18 electrons

1

arrow_right_alt

32 electrons

Asemmisa {{asɛmmisaAhyɛnsode}}
38.

Match the following sublevels to their corresponding number of orbitals.

Draggable itemarrow_right_altCorresponding Item

f

arrow_right_alt

1 orbital

d

arrow_right_alt

3 orbitals

s

arrow_right_alt

5 orbitals

p

arrow_right_alt

7 orbitals

Asemmisa {{asɛmmisaAhyɛnsode}}
39.

Match the following sublevels to their corresponding number of electrons when they are full.

Draggable itemarrow_right_altCorresponding Item

p

arrow_right_alt

2

f

arrow_right_alt

6

s

arrow_right_alt

10

d

arrow_right_alt

14

Asemmisa {{asɛmmisaAhyɛnsode}}
40.

Match the following elements to their corresponding number of unpaired electrons.

Draggable itemarrow_right_altCorresponding Item

boron

arrow_right_alt

3

chromium

arrow_right_alt

1

lead

arrow_right_alt

0

bismuth

arrow_right_alt

2

mercury

arrow_right_alt

4

Asemmisa {{asɛmmisaAhyɛnsode}}
41.

Which element has the following electron configuration

[Kr]5s24d10

Asemmisa {{asɛmmisaAhyɛnsode}}
42.

Which element has the following electron configuration

1s22s22p63s23p4

Asemmisa {{asɛmmisaAhyɛnsode}}
43.

Write the electron configuration for the following: NO SPACES

Iodine

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44.

Write the electron configuration for the following: NO SPACES

Tungsten

Asemmisa {{asɛmmisaAhyɛnsode}}
45.

Write the electron configuration for the following: NO SPACES

Silicon

Asemmisa {{asɛmmisaAhyɛnsode}}
46.

Write the noble gas notation for Chlorine. NO SPACES

Asemmisa {{asɛmmisaAhyɛnsode}}
47.

What is the principle quantum number of the last drawn electron of chlorine?

Asemmisa {{asɛmmisaAhyɛnsode}}
48.

What is the aziumuthal quantum number of the last drawn electron of chlorine?

Asemmisa {{asɛmmisaAhyɛnsode}}
49.

What is the spin quantum number of the last drawn electron of chlorine?

Asemmisa {{asɛmmisaAhyɛnsode}}
50.

How many unpaired electrons does sulfur have?

Asemmisa {{asɛmmisaAhyɛnsode}}
51.

What is the noble gas notation of sodium? NO SPACES

Asemmisa {{asɛmmisaAhyɛnsode}}
52.

What is the principle quantum number of the last drawn electron of sodium?

Asemmisa {{asɛmmisaAhyɛnsode}}
53.

What is the azimuthal quantum number of the last drawn electron of sodium?

Asemmisa {{asɛmmisaAhyɛnsode}}
54.

What is the spin quantum number of the last drawn electron of sodium?

Asemmisa {{asɛmmisaAhyɛnsode}}
55.

How many unpaired electrons does sodium have?

Asemmisa {{asɛmmisaAhyɛnsode}}
56.

What is the noble gas notation for oxygen? NO SPACES

Asemmisa {{asɛmmisaAhyɛnsode}}
57.

What is the principle quantum number of the last drawn electron of oxygen?

Asemmisa {{asɛmmisaAhyɛnsode}}
58.

What is the azimuthal quantum number of the last drawn electron of oxygen?

Asemmisa {{asɛmmisaAhyɛnsode}}
59.

What is the spin quantum number of the last drawn electron of oxygen?

Asemmisa {{asɛmmisaAhyɛnsode}}
60.

How many unpaired electrons does oxygen have?