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PROTONS, ELECTRON, AND NEUTRON

Total questions: 69

Worksheet time: 35mins

Name
Class
Date
1.

Which charge is POSITIVE?

a)

Proton

b)

Neutron

c)

Electron

d)

Cell

2.

How many protons are in Sodium?

a)

11

b)

22

c)

12

d)

33

3.

The following are the rules to be applied when filling electrons into orbitals of an atom, EXCEPT

a)

Aufbau principle

b)

Charles's Law

c)

Hund's rule

d)

Pauli's exclusion principle

4.

The electronic configuration of an atom is 1s2 2s 2 2p4. The number of valence electrons in the atom is ...

a)

8

b)

6

c)

10

d)

2

5.

What is the electronic configuration for Phosphorus atom ?

a)

1s22s22p63s23p3

b)

1s22s22p63s23p5

c)

1s22s22p3

d)

1s22s22p63s2

6.

Electrons occupy orbitals of the lowest energy first. Which of the following rules or principles states this?

a)

Balmer rule

b)

Hund's rule

c)

Aufbau principle

d)

Pauli's exclusion principle

7.

Electrons are paired based on their spin directions, clockwise or anti clockwise. Which of the following is related to the above statement ?

a)

Hund's rule

b)

Pauli's exclusion principle

c)

Aufbau principle

d)

Heisenberg uncertainty principle

8.

Which of the following statements is correct about the Figure 1 ?

a)

All the arrows should be pointing up

b)

In the 2p orbitals, there should be only one electron in the last two orbitals with the same spinning direction

c)

There is nothing incorrect with this diagram

9.

Which of the following is the electronic configuration for Mg2+ ion?

a)

1s2 2s2 2p6

b)

1s2 2s2 2p6 3s2 3p6

c)

1s2 2s2 2p6 3s2 3p2

d)

1s2 2s2 2p6 3s2

10.

Which of the following statement is correct about Hund's rule ?

a)

Electrons must occupy the degenerate orbital with the same spin, before adding electrons with opposite spins to the same orbital

b)

Each electron will occupy the lowest energy orbital first

c)

A maximum of two electrons can occupy a single atomic orbital, only if the electrons have opposite spins

11.

Which pair of ions have the same electronic configuration? ( Hint: more than one answer)

a)

Mg2+ and Al3+

b)

Al3+ and F-

c)

Sc3+ and F-

12.

The maximum number of electrons that can be accommodated in f subshell is

a)

12

b)

10

c)

14

d)

8

13.

Which subshell has the highest energy?

a)

1s

b)

3p

c)

3d

d)

4s

14.

The correct subshell electronic configurationof 29Cu is

a)

1s2 2s2 2p6 3s2 3p6 3d10 4s2

b)

1s2 2s2 2p6 3s2 3p6 3d10 4s1

c)

1s2 2s2 2p6 3s2 3p6 3d9 4s2

d)

1s2 2s2 2p6 3s2 3p6 3d5 4s1

15.

Which sushell is not possible?

a)

5p

b)

6s

c)

3f

d)

3d

16.

The correct electronic configuration of 19K is

a)

1s2 2s2 2p6 3s2 3p6 4s1

b)

1s2 2s2 2p6 3s2 3p6 3d1

c)

1s2 2s2 2p6 3s2 3p5 4s2

d)

1s2 2s2 2p6 3s2 3p5 3d2

17.

The subshell common to all shells is

a)

s

b)

p

c)

d

d)

f

18.

The subshell electronic configuration of an element is 1s2 2s2 2p6 3s2 3p6 4s2 . It's atomic number is

a)

19

b)

15

c)

20

d)

4

19.

The maximum number of electrons in M shell is

a)

14

b)

18

c)

10

d)

8

20.

As the distance from the nucleus increases, the energy

a)

Decreases

b)

Increases

c)

First increases and then decreases

d)

No change

21.

Modern periodic table is made on the basis of

a)

Atomic mass

b)

Atomic number

c)

Number of Neutrons

d)

Mass number

22.

There may be a maximum of ____ p orbitals at a given energy level.

a)

2

b)

6

c)

3

d)

8

23.

This shape is that of

a)

s-orbital

b)

d-orbital

c)

p-orbital

d)

f-orbital

24.

The spin of an electron is represented by this variable:

a)

n

b)

m

c)

L

d)

ms

25.

This is the shape of ____ orbital

a)

s

b)

d

c)

p

d)

d

26.

Orbital sublevels, or l, represents:

a)

orbital color

b)

orbital shape

c)

electron spin

d)

energy level

27.

Which of the following shows a proper pair of the l value with the orbital shape.

a)

0=f

b)

3=p

c)

1=s

d)

2=d

28.

As the energy level goes higher, the electrons

a)

have lower in energy

b)

are more stable

c)

are weaker

d)

are farther from the nucleus

29.

How many electrons total are found in the f orbital?

a)

2

b)

6

c)

10

d)

14

30.

Which of the following is incorrect about the quantum variable m, or ml?

a)

m = -l...l

b)

the value for p is -1, 0, 1

c)

when l is 2, there are 5 values for m

d)

the value is either +1/2 or -1/2

31.

If n = 2, what are the allowed values of l ? Select all that apply.

a)

0

b)

1

c)

2

d)

3

32.

What are the possible values of s?

a)

-1

b)

-1/2

c)

0

d)

1/2

e)

1

33.

What is the correct representation for an orbital which has an "n" value of 4 and an "L" value of 2?

a)

4d

b)

4s

c)

4f

d)

4p

34.

What does the 1 in "1s" stand for?

a)

energy level

b)

s orbitals

c)

p orbitals

d)

the number of electrons

35.

How many electrons are in 1s2 2s2 2p4?

a)

5

b)

6

c)

8

d)

13

36.

Which of the following sets of quantum numbers (n, l, ml, and ms) describes the valence electron of Na?

a)

2, 1, 0, -½

b)

2, 0, 0, -½

c)

3, 1, 1, +½

d)

3, 0, 0, +½

37.

Electrons that have not been excited are said to be at:

a)

high level

b)

base line

c)

set state

d)

ground state

38.

This shape is that of a...

a)

s orbital

b)

d orbital

c)

p orbital

d)

f orbital

39.

The principle quantum number, n, represents the:

a)

spin value

b)

suborbital value

c)

energy level

d)

magnetic value

40.

The proper pair of the l value with the orbital shape.

a)

0; f

b)

3; p

c)

1; s

d)

2; d

41.

With each higher energy level, the electrons are

a)

lower in energy

b)

more stable

c)

weaker

d)

farther from the nucleus

42.

How many electrons total are found in the f orbital?

a)

2

b)

6

c)

10

d)

14

43.

Which of the following is NOT a possible pair of quantum numbers?

a)

2p

b)

2d

c)

4p

d)

4f

44.
Why is the 3rd energy able to fit more electrons?
a)
Because 3 is a sacred number, just look at it!
b)
Because the p-block that looks like it is part of the 3rd energy level is actually part of the 2nd energy level
c)
Because the d-block that looks like it is part of the 4th energy level is actually part of the 3rd energy level
d)
Because the third energy level has 7 s orbitals
45.

n=4, l=3?

a)

4f

b)

4d

c)

3s

d)

3p

46.

orbital sublevels, or l, implies:

a)

orbital color

b)

electron spin

c)

orbital shape

d)

energy level

47.

Properly pair the l-value is with the orbital shape.

a)

0; f

b)

1; s

c)

3; p

d)

2; d

48.

Which of the following is incorrect about the quantum variable m, or ml?

a)

m = -l...l

b)

the value for p is -1, 0, 1

c)

when l is 2, there are 5 values for m

d)

the value is either +1/2 or -1/2

49.

This is a ____ orbital

a)

s

b)

d

c)

p

d)

d

50.

Write a set of quantum numbers for a 4d orbital.

a)

(4,1,0, -1/2)

b)

(4,2,-2, +1/2)

c)

(4,0,2,-1/2)

51.

Which set of Quantum numbers is not allowed

a)

(3,1,1,-1/2)

b)

(2,1,-2,+1/2)

c)

(4,2,-1,-1/2)

52.

The maximum number of electrons with quantum numbers with n=3 and l=2 is

a)

2

b)

4

c)

6

d)

10

53.

If n = 2, what are the allowed values of l? Tick all that apply:

a)

0

b)

1

c)

2

d)

3

54.

For l = 0, tick the possible values of m:

a)

-2

b)

-1

c)

0

d)

1

e)

2

55.

For l = 2, tick the possible values of m:

a)

-2

b)

-1

c)

0

d)

1

e)

2

56.

What are the possible values of s?

a)

-1

b)

-1/2

c)

0

d)

1/2

e)

1

57.

What is the maximum number of electrons that can be found in the n3 energy level

max number= 2n²

a)

3

b)

6

c)

8

d)

9

e)

18

58.

Which of the following sub levels correspond to n=3 l=2

l = 0–>n-1

a)

2p

b)

3s

c)

3p

d)

3d

e)

3f

59.

n=4, l=3?

a)

4f

b)

4d

c)

3s

d)

3p

60.

N=5 l=2

a)

3s

b)

4sp

c)

5d

d)

5p

61.

Which of the following sub levels does not exist

a)

2p

b)

3d

c)

2d

d)

5f

e)

4f

62.

How many unpaired electrons does an atom of chromium contain?

this can be tricky...

a)

2

b)

3

c)

4

d)

5

e)

6

63.

What is the maximum number of electrons that contain the values

n=4 l=3

a)

2

b)

6

c)

10

d)

14

e)

18

64.

How many paired electrons are in an atom of Chlorine?

draw the orbital diagram

a)

10

b)

12

c)

14

d)

16

e)

17

65.

How many orbitals contain the value n=5 l=1?

a)

1

b)

3

c)

5

d)

7

e)

9

66.

Which of the following elements is Paramagnetic?

look at the atomic numbers.

a)

Mg

b)

Ne

c)

P

d)

Ca

e)

Kr

67.

A paramagnetic atom is

a)

An atom with All paired electrons

b)

An atom with unpaired electrons

68.

An atom that is diamagnetic is

a)

An atom with all paired electrons

b)

An atom with unpaired electrons

69.

What is the maximum number of electrons numbers n=4 and ms= 1/2

Think 2n²

a)

8

b)

16

c)

24

d)

32

e)

64

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