Atomic Structure Review Flashcards

1

What is the atomic number of Phosphorus?

31
15
46
16

2

Which of these elements would form an atom that has 12 neutrons?

Sodium
Beryllium
Magnesium
Lithium

3

What is true about this element?

It has 15 electrons.
It has an atomic mass of 46 grams.
The chemical symbol tells us it is platinum.
It has the same number of protons and neutrons.

4

The number of __ equals the number of __ in the atom, so the overall charge of the atom is __.

proton, neutron, 1
neutron, electron, 0
proton, electron, -1
proton, electron, 0

5

How many protons in platinum?

79
78
47
46

6

The electron configuration shows....

The arrangement of the electrons
The total number of electrons
All of these
The number of valence electrons

7

What shows us the identity of an element?

Its atomic mass
Its mug shot
Its electron configuration
Its atomic number

8

Which element(s) has an even number of electrons?

Oxygen and Sulfur
Oxygen only
Chlorine only
Sulfur and Chlorine

9

How many electrons in Be?

3
2
4
5

10

True or false? Neutrons are found in the nucleus.

False
True

11

How many neutrons in oxygen?

5
1
9
8

12

How many neutrons does this element have?

31
15
0
16

13

How would you find the atomic mass of an atom?

Add the number of protons and electrons, only.
Add the number of protons and neutrons, only.
Add the numbers of all the subatomic particles.
Subtract the number of protons from the atomic mass.

14

The atomic number is equal to the number of _____ in the atom.

Protons
Pringles
Electrons
Neutrons

15

Which statement about the proton is true?

It weighs the same as an electron.
It has a charge of -1.
It weighs about 1 u.
It is found outside the nucleus.

16

Fill in the chart (top to bottom).

1, 0, 1
0, 1, -1
1, 1, 0
0, -1, 1

Atomic Structure Review

Questions 16

Atomic Structure Review

Questions 16