Review - Atomic Theory & Electrons

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•
Chemistry, Science
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula to find the number of neutrons in an atom?
Back
Number of Neutrons = Mass Number - Atomic Number (Protons)
2.
FLASHCARD QUESTION
Front
How many valence electrons does Lithium have?
Back
Lithium has 1 valence electron.
3.
FLASHCARD QUESTION
Front
What is the relationship between wavelength, frequency, and energy of a wave?
Back
A wave with a large wavelength has a low frequency and low energy.
4.
FLASHCARD QUESTION
Front
How many electrons can a d sublevel hold?
Back
A d sublevel can hold 10 electrons.
5.
FLASHCARD QUESTION
Front
Who discovered the nucleus of the atom?
Back
Ernest Rutherford discovered the nucleus.
6.
FLASHCARD QUESTION
Front
What is the atomic number of an element?
Back
The atomic number is the number of protons in the nucleus of an atom.
7.
FLASHCARD QUESTION
Front
What is the mass number of an atom?
Back
The mass number is the total number of protons and neutrons in the nucleus.
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