number of protons
No. Hydrogen and oxygen are two different elements.
No. Helium and oxygen are two different elements.
Only oxygen is a gas.
They’re all gases -apex
An element is such as oxygen, or nitrogen etc., A compound is a chemical combination between atoms of different elements, e.g. water (H2O) is a compound, because it contains two different elements.
No. Helium and oxygen are two different elements.
No. Hydrogen and oxygen are two different elements.
Three are molecules with different elements. Oxygen is not.
This is because a compound is a molecule of two different elements.
Carbon and Oxygen are different elements.
No. Carbon and oxygen are two very different elements.
Nitrogen and oxygen are individual elements with different properties.
Only two different elements. Hydrogen and Oxygen
Only oxygen is a gas.
Sodium Chloride is considered a compound because there are two different elements reacting in that compound. Oxygen gas is not considered a compound because oxygen is an element.
A molecule of glucose has three different elements viz., carbon, oxygen and hydrogen. The molecular formula of glucose is C6H12O6. There is actually 24 different elements. There are 6 Carbon elements,12 Hydrogen elements, and 6 Oxygen elements.
Oxoacids are acids specifically containing oxygen. Different oxyacids are defined by their extra elements, but all of them contain hydrogen and oxygen.