Answers to Periodic Table and Simple Ionic Compounds
- Page ID
- 14697
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- Complete the following Table:
Symbol | Atomic Number | Mass Number | Number of Protons | Number of Neutrons | Number of Electrons | Net Charge |
\(\mathrm{^{34}_{16}Se^{2-}}\) | 16 | 34 | 16 | 18 | 18 | -2 |
\(\mathrm{^{51}_{23}V^{3+}}\) | 23 | 51 | 23 | 28 | 20 | +3 |
\(\mathrm{^{40}_{20}Ca^{2+}}\) | 20 | 40 | 20 | 20 | 18 | +2 |
- Would you expect each of the following atoms to gain or lose electrons when forming ions? What ion is the most likely in each case?
- K should lose one electron to form K+
- F should gain one electron to form F−
- Ca should lose two electrons to form Ca2+
- Fill in the following table:
Name | Symbol | Group | Period | Metal, nonmetal or metalloid? | transition metal or main group? |
sodium | Na | 1 | 3 | metal | main group |
iron | Fe | 8 | 4 | metal | transition metal |
oxygen | O | 16 | 2 | nonmetal | main group |
- Give the formulas for the ionic compounds made of the following ions:
- ScBr3
- K2O
- CaI2
- Cr2S3
- RbF
- MgO
- K3N
- SrF2
- Al2S3