
Electron Configuration
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Chemistry
12th Grade
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15 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is Hund's rule?
Hund's rule states that single electrons with the same spin must occupy each equal-energy orbital before additional electrons with opposite spins can occupy the same orbital.
Hund's rule states that electrons will fill the lowest energy orbitals first before moving to higher energy orbitals.
Hund's rule states that all electrons in an atom must have opposite spins.
Hund's rule states that electrons will pair up in an orbital before occupying a new one.
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the Pauli exclusion principle?
It states that electrons can occupy the same quantum state.
It states that no two electrons in an atom can have the same set of four quantum numbers.
It states that electrons are attracted to protons in the nucleus.
It states that electrons can exist in multiple states simultaneously.
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the relationship between electron configuration and the periodic trends?
Electron configuration determines the atomic mass of an element.
Electron configuration helps explain periodic trends such as atomic size, ionization energy, and electronegativity.
Electron configuration has no impact on the chemical properties of elements.
Electron configuration only affects the reactivity of metals.
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the difference between an atom's ground state and excited state?
The ground state has higher energy than the excited state.
The ground state is the lowest energy configuration of an atom, while the excited state has higher energy due to electrons being promoted to higher orbitals.
The ground state and excited state are the same in terms of energy.
The excited state is the lowest energy configuration of an atom, while the ground state has higher energy.
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the ground-stable electron configuration?
The arrangement of electrons in an atom that minimizes energy and maximizes stability.
The configuration of electrons that results in the highest energy state.
The random distribution of electrons around the nucleus of an atom.
The arrangement of electrons that leads to the formation of ions.
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the significance of the valence shell in chemical bonding?
It determines the color of the element.
It contains the valence electrons that are involved in chemical bonding, determining an element's reactivity.
It is the innermost shell of an atom.
It is responsible for the mass of the atom.
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
How does the periodic table relate to electron configuration?
The periodic table is organized in a way that reflects the electron configurations of elements, with similar configurations found in the same groups.
The periodic table is arranged randomly without any relation to electron configurations.
The periodic table only includes elements with complete electron shells.
The periodic table is based solely on atomic mass, ignoring electron configurations.
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