Multiple Choice
Which of the following is a polyatomic element?
731
views
5
rank
5. Molecules and Compounds
Periodic Table: Elemental Forms (Simplified)
Struggling with Introduction to Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following elements is NOT naturally found as a diatomic molecule under standard conditions?
A
Helium
B
Oxygen
C
Chlorine
D
Nitrogen
Verified step by step guidance1
Understand what a diatomic molecule is: it consists of two atoms bonded together. Some elements naturally exist as diatomic molecules under standard conditions (room temperature and atmospheric pressure).
Recall the common diatomic elements, often remembered by the mnemonic "BrINClHOF" which stands for Bromine, Iodine, Nitrogen, Chlorine, Hydrogen, Oxygen, and Fluorine. These elements naturally form diatomic molecules.
Review the list of elements given: Helium, Oxygen, Chlorine, and Nitrogen. Identify which of these are part of the diatomic elements from the mnemonic.
Recognize that Helium is a noble gas and exists as a monatomic (single atom) gas under standard conditions, not as a diatomic molecule.
Conclude that Helium is the element that is NOT naturally found as a diatomic molecule under standard conditions.
2:35mWatch next
Master Periodic Table: Elemental Forms (Simplified) Concept 1 with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Periodic Table: Elemental Forms (Simplified) practice set
Problem sets built by lead tutorsExpert video explanations