Chap. 3 & 4 Flashcard

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•
Chemistry
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the shape of a p-orbital?
Back
The p-orbital has a dumbbell shape.
2.
FLASHCARD QUESTION
Front
What does Hund's rule state?
Back
Hund's rule states that electrons will occupy degenerate orbitals singly before pairing up.
3.
FLASHCARD QUESTION
Front
What is the Pauli exclusion principle?
Back
The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.
4.
FLASHCARD QUESTION
Front
What does the spin quantum number describe?
Back
The spin quantum number describes the direction of the electron spin, which can be either +1/2 or -1/2.
5.
FLASHCARD QUESTION
Front
How many atoms of carbon are in 6.00g of carbon?
Back
There are 3.01x10^23 atoms of carbon in 6.00g of carbon.
6.
FLASHCARD QUESTION
Front
What is the formula to calculate the number of moles from mass?
Back
Number of moles = mass (g) / molar mass (g/mol).
7.
FLASHCARD QUESTION
Front
What is the significance of the principal quantum number (n)?
Back
The principal quantum number (n) indicates the energy level and size of the orbital.
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