Question

question 8 (1 point)
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which of the following is correct?

1. s₈ is an atomic element
2. f₂o is an ionic compound
3. o₂ is a molecular element
4. cscl₂ is a molecular compound

Explanation:

• For \(S_8\): It is a molecular element as it consists of \(S_8\) molecules (not single atoms), so statement 1 is incorrect.
• For \(F_2O\): Fluorine (\(F\)) and oxygen (\(O\)) are non - metals. Non - metals form covalent (molecular) compounds by sharing electrons. Ionic compounds are formed between metals and non - metals (transfer of electrons). So \(F_2O\) is a molecular compound, and statement 2 is incorrect.
• For \(O_2\): It exists as \(O_2\) molecules (two oxygen atoms bonded together). Elements that exist as molecules are called molecular elements. So statement 3 is correct.
• For \(CsCl_2\): Cesium (\(Cs\)) is a metal and chlorine (\(Cl\)) is a non - metal. Metals and non - metals form ionic compounds (through electron transfer). So \(CsCl_2\) is an ionic compound, and statement 4 is incorrect.

Answer:

1. \(O_2\) is a molecular element.