What is ionization energy?
Periodic Table and Trends Practice

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Chemistry
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9th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
The amount of energy required to remove an electron from an isolated atom or molecule.
2.
FLASHCARD QUESTION
Front
What is the correct decreasing order of ionization energy for Li, Na, K, Cs?
Back
Li > Na > K > Cs.
3.
FLASHCARD QUESTION
Front
Why are Group 18 elements stable and unreactive?
Back
Their valence electron shell has reached a full octet.
4.
FLASHCARD QUESTION
Front
Which atom has the largest atomic radius: potassium, rubidium, francium, or cesium?
Back
Francium.
5.
FLASHCARD QUESTION
Front
How many energy levels does an atom of Chlorine have?
Back
3.
6.
FLASHCARD QUESTION
Front
What is the trend of metal reactivity in the periodic table?
Back
Metal reactivity increases to the left and down.
7.
FLASHCARD QUESTION
Front
What is the trend of nonmetal reactivity in the periodic table?
Back
Nonmetal reactivity increases to the right and up.
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