Electrons in Atoms

Question 1

The chemical properties of atoms, ions, and molecules are related to the arrangement of ______ within them.

Answer 1

electrons

Question 2

In ______ model, there are four ‘quantum’ numbers that tell us where an electron is ______ to be located.

Answer 2

• Schrodinger’s
• likely

Question 3

Principal Quantum Number (n), 1-7 gives the ______ level.

Answer 3

energy

Question 4

Subshell (l), s-p-d-f, gives the ______ of the region of space.

Answer 4

shape

Question 5

Orbital (m), gives us the ______ in space of the region.

Answer 5

orientation

Question 6

Electron’s can spin what ways?

Answer 6

• Clockwise
• Counterclockwise

Question 7

No 2 electrons have the ______ 4 quantum numbers.

Answer 7

same

Question 8

Principal Quantum Number Designates the ______ level.

Answer 8

energy

Question 9

Principal Quantum Number Tells how far away from the ______ an electron is likely to be.

Answer 9

nucleus

Question 10

Principal Quantum Number Assigned values in order of ______ energy.

Answer 10

increasing

Question 11

Principal Quantum Number Corresponds to the ______ on the periodic table.

Answer 11

period

Question 12

Principal Quantum Number Lower value of n means the electron is closer to nucleus and has ______ energy.

Answer 12

less

Question 13

Within each principal energy level there are a certain number of ______.

Answer 13

sublevels

Question 14

Energy level 1 has 1 subshell; level 2 has ______; level 3 has ______, etc.

Answer 14

[2, 3]

Question 15

These sublevels are called ______.

Answer 15

s, p, d, f

Question 16

Each sublevel has a unique ______.

Answer 16

shape

Question 17

These shapes describe the ______ of space where an e⁻ is likely to be located.

Answer 17

region

Question 18

Each sublevel consists of a certain number of ______.

Answer 18

orbitals

Question 19

s sublevel: ______ orbital; p sublevel: ______ orbitals; d sublevel: ______ orbitals; f sublevel: ______ orbitals.

Answer 19

[1, 3, 5, 7]

Question 20

Each orbital can only hold ______ electrons.

Answer 20

2

Question 21

Orbitals within each sublevel have similar shapes, but different ______ in space.

Answer 21

orientations

Question 22

s orbitals have a ______ shape.

Answer 22

spherical

Question 23

Hold a maximum of ______ electrons. First found in the ______ energy level.

Answer 23

• 2
• 1st

Question 24

p orbitals have a pear or ______ shape.

Answer 24

dumbbell

Question 25

3 different orientations: ______, ______, & ______.

Answer 25

[‘px’, ‘py’, ‘pz’]

Question 26

Each orientation holds a ______ of 2 electrons.

Answer 26

maximum

Question 27

The p sublevel as a whole holds a maximum of ______ electrons.

Answer 27

6

Question 28

First found in the ______ energy level.

Answer 28

2nd

Question 29

d-orbitals have ______ different orientations

Answer 29

5

Question 30

Each holds ______ electrons.

Answer 30

2

Question 31

The d sublevel as a whole holds a total of ______ electrons.

Answer 31

10

Question 32

First found in the ______ energy level.

Answer 32

3rd

Question 33

f-orbitals do not appear until the ______ shell (energy level) and higher.

Answer 33

4th

Question 34

Max # of e⁻’s that can occupy a principal energy level is given by the formula ______.

Answer 34

2n^2

Question 35

How many electrons are allowed in energy level 3?

Answer 35

18

Question 36

3p has ______

Answer 36

3

Question 37

2s has ______

Answer 37

1

Question 38

4f has ______

Answer 38

7

Question 39

4p has ______

Answer 39

3

Question 40

3d has ______

Answer 40

5

Question 41

In an atom, electrons are positioned around the nucleus in the most ______ arrangement possible.

Answer 41

stable

Question 42

This is the arrangement that has the ______ energy.

Answer 42

lowest

Question 43

Electrons will occupy orbitals having the ______ energy first, and then in order of increasing energy.

Answer 43

lowest

Question 44

The ______ state of an atom is when every e⁻ is at its lowest energy.

Answer 44

ground

Question 45

An orbital can be empty, have 1 e⁻, or AT MOST have ______ e⁻’s.

Answer 45

2

Question 46

Electrons occupying the same orbital must have ______ spins—one clockwise, one counterclockwise.

Answer 46

opposite

Question 47

When e⁻’s occupy orbitals of ______ energy, 1 e⁻ enters each orbital until all the orbitals contain 1 e⁻ with parallel spins.

Answer 47

equal