Multiple Choice
Which part of an atom accounts for most of its mass?
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- 1. Intro to General Chemistry3h 46m
- Classification of Matter18m
- Physical & Chemical Changes19m
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- The Atom9m
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- Naming Alkanes4m
- The Alkyl Groups9m
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- 23. Chemistry of the Nonmetals2h 39m
- Main Group Elements: Bonding Types4m
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- 24. Transition Metals and Coordination Compounds3h 19m
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- Ligands10m
- Complex Ions5m
- Coordination Complexes7m
- Classification of Ligands11m
- Coordination Numbers & Geometry9m
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- Isomerism in Coordination Complexes17m
- Orientations of D Orbitals4m
- Intro to Crystal Field Theory10m
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- Crystal Field Theory Summary8m
- Magnetic Properties of Complex Ions9m
- Strong-Field vs Weak-Field Ligands6m
- Magnetic Properties of Complex Ions: Octahedral Complexes11m
2. Atoms & Elements
The Atom
Multiple Choice
How many silicon atoms are present in one molecule of SiH_4?
A
0
B
1
C
4
D
2
0 Comments
Verified step by step guidance1
Identify the chemical formula given: SiH_4, which represents one molecule of silane.
Understand that the subscript number after an element symbol indicates how many atoms of that element are present in one molecule.
In SiH_4, the subscript '4' applies only to hydrogen (H), meaning there are 4 hydrogen atoms.
Since there is no subscript after Si, it means there is exactly 1 silicon atom in the molecule.
Therefore, the number of silicon atoms in one molecule of SiH_4 is 1.
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