Periodic Table Quiz: Test Your Knowledge of the Elements

Question 1

How does the atomic radius of elements change as you move from left to right across a period in the Periodic Table?

Accepted Answer

Decreases

Answer

Increases

Answer

Stays the same

Answer

Fluctuates

Question 2

Which of the following is NOT a property of metalloids?

Accepted Answer

Shiny

Answer

Good conductors of electricity

Answer

Brittle

Answer

Semi-conductors

Question 3

Which element is the most reactive non-metal?

Accepted Answer

Fluorine

Answer

Chlorine

Answer

Bromine

Answer

Iodine

Question 4

What element is essential for the production of photosynthesis?

Accepted Answer

Carbon

Answer

Hydrogen

Answer

Nitrogen

Answer

Oxygen

Question 5

Which group of elements are all metals?

Accepted Answer

Group 1

Answer

Group 16

Answer

Group 17

Answer

Group 18

Question 6

Which period contains the element with the lowest atomic mass?

Accepted Answer

Period 1

Answer

Period 2

Answer

Period 3

Answer

Period 4

Question 7

Who is known as the 'Father of the Periodic Table'?

Accepted Answer

Dmitri Mendeleev

Answer

Isaac Newton

Answer

Albert Einstein

Answer

Marie Curie

Question 8

Which group of elements on the Periodic Table are the most reactive?

Accepted Answer

Alkali metals

Answer

Halogens

Answer

Noble gases

Answer

Transition metals

Question 9

What is the term for the average mass of all isotopes of an element, weighted by their abundance?

Accepted Answer

Atomic mass

Answer

Molecular mass

Answer

Relative atomic mass

Answer

Isotopic mass

Question 10

What is the chemical symbol for Gold?

Accepted Answer

Au

Answer

Ag

Answer

Cu

Answer

Fe

Question 11

As you move down a group on the Periodic Table, the atomic radius:

Accepted Answer

Increases

Answer

Decreases

Answer

Remains constant

Answer

Varies randomly

Question 12

Which of the following elements is NOT one of the noble gases?

Accepted Answer

Chlorine

Answer

Helium

Answer

Neon

Answer

Argon

Question 13

What is the main purpose of the Periodic Table?

Accepted Answer

To organize elements based on their properties

Answer

To predict the reactivity of elements

Answer

To determine the atomic mass of elements

Answer

To identify the isotopes of elements

Question 14

What is the name of the horizontal rows on the Periodic Table?

Accepted Answer

Periods

Answer

Groups

Answer

Blocks

Answer

Families

Question 15

Which of the following elements is a transition metal?

Accepted Answer

Iron

Answer

Oxygen

Answer

Carbon

Answer

Bromine

Question 16

What is the definition of atomic mass?

Accepted Answer

The average mass of all isotopes of an element

Answer

The total number of protons in an atom

Answer

The total number of electrons in an atom

Answer

The mass of a single neutron

Question 17

What is the chemical symbol for iron?

Accepted Answer

Fe

Answer

Ir

Answer

I

Answer

F

Question 18

Which of the following elements belongs to the group of transition metals?

Accepted Answer

Copper

Answer

Sodium

Answer

Argon

Answer

Chlorine

Question 19

What is the definition of atomic number?

Accepted Answer

The total number of protons in the nucleus of an atom

Answer

The number of neutrons in the nucleus of an atom

Answer

The total number of electrons in an atom

Answer

The mass of the atom in atomic mass units

Question 20

Which group in the Periodic Table contains elements that are highly reactive and form basic oxides?

Accepted Answer

Group 1

Answer

Group 17

Answer

Group 18

Answer

Group 2

Question 21

Which of the following elements is a noble gas?

Accepted Answer

Neon

Answer

Oxygen

Answer

Nitrogen

Answer

Carbon

Question 22

What is the general trend in electronegativity across a period in the Periodic Table?

Accepted Answer

It increases from left to right

Answer

It decreases from left to right

Answer

It stays the same

Answer

It varies irregularly

Question 23

Which of the following is a metalloid?

Accepted Answer

Silicon

Answer

Chlorine

Answer

Magnesium

Answer

Potassium

Question 24

Which element in the Periodic Table has the highest electronegativity?

Accepted Answer

Chlorine (Cl)

Answer

Sodium (Na)

Answer

Aluminium (Al)

Answer

Potassium (K)

Question 25

Which of the following is NOT a characteristic of metals?

Accepted Answer

Brittle and break easily

Answer

Good conductors of heat and electricity

Answer

Malleable and ductile

Answer

High melting point

Question 26

The atomic number of an element represents:

Accepted Answer

The number of protons in the nucleus

Answer

The number of neutrons in the nucleus

Answer

The number of electrons in the atom

Answer

The total mass of the atom

Question 27

The atomic mass of an element is the:

Accepted Answer

Average mass of all isotopes

Answer

Mass of the most abundant isotope

Answer

Sum of the masses of all protons and neutrons

Answer

Mass of the nucleus

Question 28

Which of the following elements is a noble gas?

Accepted Answer

Helium

Answer

Sodium

Answer

Chlorine

Answer

Iron

Question 29

The chemical symbol for sodium is:

Accepted Answer

Na

Answer

He

Answer

Cl

Answer

Fe

Question 30

Which of the following is a metalloid?

Accepted Answer

Silicon

Answer

Gold

Answer

Potassium

Answer

Bromine

Question 31

The periodic table is arranged in:

Accepted Answer

Groups and periods, based on chemical properties

Answer

Order of increasing atomic numbers

Answer

Random order, based on element discovery

Answer

Order of decreasing atomic masses

Question 32

Which element is a noble gas? Noble gases are unreactive elements with a full outer electron shell.

Accepted Answer

Argon

Answer

Sodium

Answer

Chlorine

Question 33

Which element is represented by the symbol Fe?

Accepted Answer

Iron

Answer

Fluorine

Answer

Fermium

Answer

Francium

Question 34

The Periodic Table is organized primarily by:

Accepted Answer

Atomic number

Answer

Atomic mass

Answer

Chemical reactivity

Answer

Density

Question 35

Of the following elements, which has the greatest atomic mass?

Accepted Answer

Uranium

Answer

Helium

Answer

Carbon

Answer

Iron

Question 36

The vertical columns in the Periodic Table are called:

Accepted Answer

Groups

Answer

Periods

Answer

Blocks

Answer

Families

Question 37

Which of the following is a characteristic property of metals?

Accepted Answer

Good conductors of electricity

Answer

Brittle

Answer

Low melting points

Answer

Gaseous at room temperature

Question 38

Which of the following statements about noble gases is INCORRECT?

Accepted Answer

They react easily with most other elements.

Answer

They have a full valence shell.

Answer

They are colorless and odorless.

Answer

They are found in Group 18 of the Periodic Table.

Question 39

What is the atomic number of chlorine?

Accepted Answer

17

Answer

19

Answer

16

Answer

18

Question 40

Which group of elements is known as the halogens?

Accepted Answer

Group 17

Answer

Group 18

Answer

Group 16

Answer

Group 15

Question 41

Which element has the electronic configuration 1s2 2s2 2p6 3s2 3p5?

Accepted Answer

Chlorine

Answer

Phosphorus

Answer

Sodium

Answer

Potassium

Question 42

Which of the following elements is classified as a metalloid?

Accepted Answer

Silicon

Answer

Gold

Answer

Calcium

Answer

Chlorine

Question 43

Which of the following is NOT a benefit of using the Periodic Table?

Accepted Answer

It cannot be used to predict the chemical properties of elements.

Answer

It organizes elements based on their properties

Answer

It can be used to determine the atomic mass of an element

Answer

It helps identify trends in the behavior of elements

Question 44

Which element is most electronegative?

Accepted Answer

Fluorine

Answer

Oxygen

Answer

Chlorine

Answer

Nitrogen

Question 45

Which of the following is a metal?

Accepted Answer

Potassium

Answer

Argon

Answer

Chlorine

Question 46

As you move across a period from left to right, what is the trend in atomic radius?

Accepted Answer

Decreases

Answer

Varies randomly

Answer

Stays the same

Answer

Increases

Question 47

Which of the following elements is the most reactive metal?

Accepted Answer

Potassium

Answer

Chlorine

Answer

Fluorine

Answer

Iodine

Question 48

What is the name of the group of elements in the s-block?

Accepted Answer

Alkali Metals

Answer

Noble Gases

Answer

Transition Elements

Answer

Inner Transition Elements