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    Chemistry
    Grade-9
    Easy

    Question

    The chemical formula of tetraphosphorus heptoxide is:

    1. F₄O₁₀
    2. P₄O7
    3. PO
    4. P₁₀O₄

    Hint:

    The prefix -tetra which means four and -hept means seven.

    The correct answer is: P₄O7

      • The subscript of the chemical formula is the prefix in the chemical name.
      • In the name phosphorus has prefix -tetra which means four and oxygen has prefix -hept means seven.
      • The chemical formula is P4O7.

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