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18 April, 20:33

Write formulas for compounds formed from these pairs of ions:

1. Ba2+, S2-

2. B. Li+, O2-

3. Ca2+, N3-

4. Cu2+, I-

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Answers (2)
  1. 18 April, 20:58
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    1. BaS

    2. Li2O

    3. Ca3N2

    4. CuI2
  2. 18 April, 22:20
    0
    The formulas for compounds formed from these pairs of ions are as follows:

    1. Ba2+, S2-

    BaS, 1 atom of Ba2 + is needed to have a stable compound with S2 -.

    2. Li+, O2-

    Li2O, 2 atoms of Li + is needed to have a stable compound with O2 -.

    3. Ca2+, N3-

    Ca3N2, 3 atoms of Ca2 + is needed to have a stable compound with 2 atoms of N3 -.

    4. Cu2+, I-

    CuI2, 1 atom of Cu2 + is needed to have a stable compound with 2 atoms of I -.
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