Diatomic Elements Flashcards

Questions and Answers

What is a diatomic molecule?

A molecule that does not exist

A molecule with one atom

A molecule with two atoms linked together (correct)

A molecule with three atoms

List the seven diatomic elements.

H, O, Br, F, I, N, Cl

What is the symbol for nitrogen in its diatomic form?

N₂

What is the symbol for oxygen in its diatomic form?

O₂ Signup and view all the answers

What is the symbol for fluorine in its diatomic form?

F₂ Signup and view all the answers

What is the symbol for chlorine in its diatomic form?

Cl₂ Signup and view all the answers

What is the symbol for bromine in its diatomic form?

Br₂ Signup and view all the answers

What is the symbol for iodine in its diatomic form?

I₂ Signup and view all the answers

What is the symbol for hydrogen in its diatomic form?

H₂ Signup and view all the answers

The subscript of diatomic elements when they are alone is ___ (e.g., H₂).

2 Signup and view all the answers

When diatomic elements are part of a compound, the subscript is ____ (e.g., HCl).

not 2 Signup and view all the answers

What happens to the subscript of diatomic elements when they need more atoms to create a neutral compound?

It may change based on the need for additional atoms. Signup and view all the answers

Study Notes

Diatomic Molecules Overview

Diatomic molecules consist of two atoms bonded together.
There are 7 diatomic elements on the periodic table.

List of Diatomic Elements

Diatomic elements are represented by the acronym "HOBrFINCl":
- Hydrogen (H)
- Oxygen (O)
- Bromine (Br)
- Fluorine (F)
- Iodine (I)
- Nitrogen (N)
- Clorine (Cl)

Naming Convention

The mnemonic "I Never Bring Classwork Home On Fridays" helps recall the names of the diatomic elements:
- Iodine
- Nitrogen
- Bromine
- Chlorine
- Hydrogen
- Oxygen
- Fluorine

Subscripts for Diatomic Elements

When an element exists independently as a diatomic molecule, a subscript of 2 is used (e.g., H₂).
In a compound, the diatomic element does not typically show the subscript (e.g., HCl is hydrogen chloride).
Exception: If more atoms are required for neutrality in a compound, subscripts must reflect this (e.g., H₄C for hydrogen with carbon).

Individual Diatomic Elements

Nitrogen: Exists as N₂.
Oxygen: Exists as O₂.
Fluorine: Exists as F₂.
Chlorine: Exists as Cl₂.
Bromine: Exists as Br₂.
Iodine: Exists as I₂.
Hydrogen: Exists as H₂.

Description

Test your knowledge of the 7 diatomic elements with these flashcards. Each card includes the definition, symbols, and mnemonic aids to help you remember their names. Perfect for chemistry students looking to master fundamental concepts.