Multiple Choice
Which of the following elements has exactly one unpaired electron in its p orbital?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Why is the configuration of electrons in an atom's outer shell important?
A
It sets the number of protons in the nucleus.
B
It affects the color of the element in its solid state.
C
It determines the chemical reactivity and bonding behavior of the atom.
D
It controls the atomic mass of the element.
Verified step by step guidance1
Understand that the electron configuration of an atom describes how electrons are distributed in its atomic orbitals, especially focusing on the outermost shell, also called the valence shell.
Recognize that the valence electrons are the ones involved in chemical reactions because they can be gained, lost, or shared with other atoms to form chemical bonds.
Know that the number and arrangement of valence electrons determine how an atom interacts with other atoms, influencing its chemical reactivity and the types of bonds it can form (ionic, covalent, metallic).
Realize that the number of protons in the nucleus defines the element itself but does not directly affect chemical reactivity; instead, it is the outer electron configuration that governs bonding behavior.
Conclude that the electron configuration in the outer shell is crucial because it determines the chemical properties and reactivity of the atom, which is why it is the correct answer to the question.
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