Question 1

Which of the following elements is a monatomic element that is also a halogen?

Accepted Answer

Chlorine, Cl

Question 2

Which element listed below is a polyatomic element in its natural form?

Accepted Answer

Oxygen, O

Question 3

Which of the following is a monatomic element that is not diatomic in the p-block and is a metalloid?

Accepted Answer

Silicon, Si

Question 4

Which group in the periodic table contains only monatomic elements in their natural state?

Accepted Answer

Group 18 (Noble gases)

Question 5

Which of the following elements is diatomic in its natural state and is essential for respiration in humans?

Accepted Answer

Oxygen, O

Question 6

A student claims that all elements in Group 17 are diatomic in their natural state. Which element disproves this claim?

Accepted Answer

Astatine, At

Question 7

Which of the following elements is NOT a polyatomic element?

Accepted Answer

Argon, Ar

Question 8

Which element is found as a monatomic gas at room temperature and is used in lighting?

Accepted Answer

Neon, Ne

Question 9

Which of the following elements is a metalloid and exists as a monatomic solid in its natural state?

Accepted Answer

Silicon, Si

Question 10

Which element is diatomic and is commonly used in disinfectants and water treatment?

Accepted Answer

Chlorine, Cl

Question 11

Which of the following elements is a polyatomic element and is essential for DNA and ATP in living organisms?

Accepted Answer

Phosphorus, P

Question 12

Which element is monatomic, chemically inert, and used in balloons to prevent fires?

Accepted Answer

Helium, He

Question 13

Which of the following elements is diatomic and makes up the majority of Earth's atmosphere?

Accepted Answer

Nitrogen, N

Question 14

Which element is a polyatomic solid and is commonly used in matches and fertilizers?

Accepted Answer

Phosphorus, P

Question 15

Which of the following elements is monatomic and is used in lasers and high-voltage indicators?

Accepted Answer

Argon, Ar

Question 16

Which element is diatomic and is used in the production of ammonia via the Haber process?

Accepted Answer

Nitrogen, N

Question 17

Which of the following elements is a polyatomic element and is used in the vulcanization of rubber?

Accepted Answer

Sulfur, S

Question 18

Which element is monatomic and is used in the treatment of thyroid disorders?

Accepted Answer

Helium, He

Question 19

Which of the following elements is diatomic and is used in rocket fuel?

Accepted Answer

Hydrogen, H

Question 20

Which element is monatomic and is used in the manufacture of semiconductors?

Accepted Answer

Silicon, Si

Elemental Forms and the Periodic Table: Monatomic, Diatomic, and Polyatomic Elements

Study Guide - Practice Questions