Development of the Periodic Table

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•
Chemistry
•
8th - 10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is an isotope?
Back
An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons, resulting in a different atomic mass.
2.
FLASHCARD QUESTION
Front
What does it mean if an atom is in Period 3 of the periodic table?
Back
It means that the atom has 3 electron shells.
3.
FLASHCARD QUESTION
Front
What information does the period number provide in the periodic table?
Back
The period number indicates the number of electron shells in an atom.
4.
FLASHCARD QUESTION
Front
How many electrons are in the outer shell of a bromine atom?
Back
Bromine has 7 electrons in its outer shell.
5.
FLASHCARD QUESTION
Front
If an element is in Group 6 and Period 3, how many total electrons does it have?
Back
The element has 16 electrons in total.
6.
FLASHCARD QUESTION
Front
What is the significance of the group number in the periodic table?
Back
The group number indicates the number of electrons in the outer shell of the elements in that group.
7.
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, which determines the element's identity.
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