Did I do this right please?

NetherCraft 0

Classify each compound by the number of chlorine atoms indicated in the chemical formula.

BaCl2- I put down 2 Cl atoms

HClO2- I put down 2 Cl atoms

CCl4- I put down 4 Cl atoms

Cr(ClO3)3- I put down 3 Cl atoms

PCl5- I put down 5 Cl atoms

CCl2F2- I put down 2 Cl atoms?

Ca (ClO3)2 – I put down 6 Cl atoms.

How about KCl- i put down 1 but it was wrong how many chlorine atoms are there??

4 Answers

  • Yes

    No HClO2 The 2 comes after the oxygen, not the Chlorine. Only one Cl here.

    Yes

    Yes

    Yes

    Yes

    No same mistake as before. It is O3, not Cl 3. There are 2 Chlorine atoms, 6 Oxygen.

    Source(s): Physicist
  • BaCl2- I put down 2 Cl atoms

    HClO2- I put down 2 Cl atoms —X

    CCl4- I put down 4 Cl atoms

    Cr(ClO3)3- I put down 3 Cl atoms

    PCl5- I put down 5 Cl atoms

    CCl2F2- I put down 2 Cl atoms

    Ca (ClO3)2 – I put down 6 Cl atoms. –X

    How about KCl- i put down 1 but it was wrong how many chlorine atoms are there?? There is one

  • They’re all correct except for

    HClO2 —> The 2 applies only to the oxygen

    Ca(ClO3)2 —> 2, the subscript 3 in the parenthesis only applies to the oxygen, while the subscript 2 applies to everything in the parenthesis.

    KCl —> 1, that was correct.

  • This is a confusing question, in that the radicals could be considered as a complete ion and not an atom alone.

    Doing it this way I get. 2, 0, 4, 0, 5, 2, 0, and KCl is obviously one, unless the formula is wrong with KCl-,which makes a chloride ion. (another trick?) Chemistry is tough enough with tricky or unclear guestions.

    Source(s): Teacher

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