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Chemistry · Oct / Nov 2023 · Paper 12 · Question 23

5070Arrangement of elements

The table shows the number of electrons in one atom of each of the elements W, X, Y and Z. | element | number of electrons in one atom | | W | 9 | | X | 15 | | Y | 19 | | Z | 35 | Which statement is correct?

  1. AW and Z are in the same group.
  2. BX is a metal.
  3. CX and Y will form the compound X3Y.
  4. DY is a non-metal.

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Correct answer: A. W and Z are in the same group.

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