Multiple choice: Noble gases
Alkali metals
Transition metals
Alkaline earth metals
Halogen

Thank you in advance

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Ascientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen, and nitrogen. which term most likely describes what she is measuring?

How many atoms are in 2 moles of phosphorus