Multiple Choice
Which element on the periodic table has 20 protons in its nucleus?
Table of contents
- 1. Intro to General Chemistry3h 48m
- Classification of Matter18m
- Physical & Chemical Changes19m
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- 22. Organic Chemistry5h 7m
- Introduction to Organic Chemistry8m
- Structural Formula8m
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- Skeletal Formula6m
- Spatial Orientation of Bonds3m
- Intro to Hydrocarbons16m
- Isomers11m
- Chirality15m
- Functional Groups in Chemistry11m
- Naming Alkanes4m
- The Alkyl Groups9m
- Naming Alkanes with Substituents13m
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- 23. Chemistry of the Nonmetals2h 39m
- Main Group Elements: Bonding Types4m
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- Main Group Elements: Density11m
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- Production of Hydrogen8m
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- Boron Family: Borane7m
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- Nitrogen Family Reactions12m
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- Noble Gas Compounds3m
- 24. Transition Metals and Coordination Compounds3h 19m
- Atomic Radius & Density of Transition Metals11m
- Electron Configurations of Transition Metals7m
- Electron Configurations of Transition Metals: Exceptions11m
- Paramagnetism and Diamagnetism10m
- Ligands10m
- Complex Ions5m
- Coordination Complexes7m
- Classification of Ligands11m
- Coordination Numbers & Geometry9m
- Naming Coordination Compounds22m
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- Isomerism in Coordination Complexes17m
- Orientations of D Orbitals4m
- Intro to Crystal Field Theory10m
- Crystal Field Theory: Octahedral Complexes5m
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- Crystal Field Theory: Square Planar Complexes4m
- Crystal Field Theory Summary8m
- Magnetic Properties of Complex Ions9m
- Strong-Field vs Weak-Field Ligands6m
- Magnetic Properties of Complex Ions: Octahedral Complexes11m
- 1. The Chemical World10m
2. Atoms & Elements
Periodic Table: Charges
Multiple Choice
What is the typical charge on a magnesium (Mg) ion when it forms an ionic compound?
A
2+
B
1+
C
0
D
2-
0 Comments
Verified step by step guidance1
Recall that magnesium (Mg) is an alkaline earth metal located in Group 2 of the periodic table.
Elements in Group 2 typically lose two electrons to achieve a stable electron configuration similar to the nearest noble gas.
When magnesium loses two electrons, it forms a cation with a charge of +2, denoted as Mg^{2+}.
This positive charge results because the number of protons (positive charges) exceeds the number of electrons (negative charges) by two.
Therefore, the typical charge on a magnesium ion in an ionic compound is 2+.
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