Atomic structure and electron configurations

Flashcard
•
Science
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are valence electrons?
Back
Valence electrons are the outermost electrons of an atom that are involved in chemical bonding.
2.
FLASHCARD QUESTION
Front
How many electrons does an atom of Argon have?
Back
An atom of Argon has 18 electrons.
3.
FLASHCARD QUESTION
Front
What is the electron configuration for the element with atomic number 15?
Back
The electron configuration for the element with atomic number 15 (Phosphorus) is 1s² 2s² 2p⁶ 3s² 3p³.
4.
FLASHCARD QUESTION
Front
How many electrons does an Iodine atom have?
Back
An Iodine atom has 53 electrons.
5.
FLASHCARD QUESTION
Front
How many electrons does an atom of Neon have?
Back
An atom of Neon has 10 electrons.
6.
FLASHCARD QUESTION
Front
What is the atomic number of an element?
Back
The atomic number of an element is the number of protons in the nucleus of an atom, which also equals the number of electrons in a neutral atom.
7.
FLASHCARD QUESTION
Front
What is the significance of electron configurations?
Back
Electron configurations describe the distribution of electrons in an atom's orbitals, which determines the atom's chemical properties and reactivity.
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