What is the atomic number of an element?
Periodic Table

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Chemistry
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11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.
2.
FLASHCARD QUESTION
Front
What is a noble gas?
Back
Noble gases are elements in Group 18 of the periodic table that are characterized by their lack of reactivity due to having a full valence shell.
3.
FLASHCARD QUESTION
Front
What does it mean for an element to be ductile?
Back
Ductility is the ability of a material to be stretched into a wire without breaking.
4.
FLASHCARD QUESTION
Front
What are metalloids?
Back
Metalloids are elements that have properties of both metals and nonmetals, typically found along the zig-zag line on the periodic table.
5.
FLASHCARD QUESTION
Front
What is the difference between metals and nonmetals?
Back
Metals are typically shiny, conductive, and malleable, while nonmetals are usually dull, insulative, and brittle.
6.
FLASHCARD QUESTION
Front
What is the significance of the periodic table's arrangement?
Back
The periodic table is arranged by increasing atomic number, which reflects the periodic trends in element properties.
7.
FLASHCARD QUESTION
Front
What is an isotope?
Back
Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.
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