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Questions and Answers
Which of the following is a subatomic particle with a negative charge?
Which of the following is a subatomic particle with a negative charge?
- Electron (correct)
- Isotope
- Proton
- Neutron
What is the number of protons in the nucleus of an atom called?
What is the number of protons in the nucleus of an atom called?
- Atomic number (correct)
- Mass number
- Valence number
- Atomic mass
What type of chemical bond involves the sharing of electron pairs between atoms?
What type of chemical bond involves the sharing of electron pairs between atoms?
- Ionic bond
- Covalent bond (correct)
- Metallic bond
- Hydrogen bond
Which of the following is a characteristic of a Lewis acid?
Which of the following is a characteristic of a Lewis acid?
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What is the shape of a molecule with a steric number of 4 and 2 lone pairs on the central atom?
What is the shape of a molecule with a steric number of 4 and 2 lone pairs on the central atom?
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Which of the following is a property of a basic solution?
Which of the following is a property of a basic solution?
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Study Notes
Subatomic Particles
- Electrons are subatomic particles that carry a negative charge.
Protons
- The number of protons in an atom's nucleus is referred to as the atomic number.
Chemical Bonds
- Covalent bonds involve the sharing of electron pairs between atoms, facilitating chemical stability.
Lewis Acid Characteristics
- Lewis acids are substances that can accept an electron pair from a donor, acting as electron pair acceptors in chemical reactions.
Molecular Shape
- A molecule with a steric number of 4 and 2 lone pairs on the central atom has a bent or angular shape, which affects its polarity and reactivity.
Basic Solutions
- Basic solutions have a pH greater than 7, indicating a higher concentration of hydroxide ions (OH⁻) compared to hydrogen ions (H⁺).
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