Hydrogen bromide is a chemical compound. It’s formed from atoms of hydrogen and bromine, two elements
An element is a substance which cannot be split into simpler forms by an ordinary chemical process . This simply goes to say that elements are substances which that cannot be decomposed into simpler substances by ordinary chemical reactions.
An atom is the smallest unit or part of an element which can take part in a chemical reaction.
On a general note, elements are classified as thus:
So therefore, Hydrogen bromide is a chemical compound. It’s formed from atoms of hydrogen and bromine, two elements
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