Question

Which of the following is a monoatomic molecule? Glucose a) glucose b) helium c) carbon dioxide d) sodium chloride​

Answer 1

(b) Helium is a monoatomic molecule among these.

• Monoatomic molecules are molecules consisting of similar kinds of atoms and can be called elements.
• Glucose is a simple organic compound or hydrocarbon which consist of carbon, hydrogen and oxygen which has a formula $C_{6}H_{12}O_{6}$.
• Helium is an element having the formula 'He' and thus it is a monoatomic molecule.
• Carbon dioxide is a compound of gas consisting of carbon and oxygen having the formula $CO_{2}$.
• Sodium chloride is a salt and a simple inorganic compound having the formula $NaCl$.