What is ionization energy?
PERIODIC TRENDS

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•
Chemistry
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The energy required to remove an electron from an atom in its gaseous state.
2.
FLASHCARD QUESTION
Front
Why does Francium (Fr) have the lowest ionization energy in Group 1?
Back
Its 1 valence electron is very far from the nucleus, so little energy is needed to remove it.
3.
FLASHCARD QUESTION
Front
What trend does ionization energy follow across a period?
Back
Ionization energy generally increases across a period from left to right.
4.
FLASHCARD QUESTION
Front
What trend does ionization energy follow down a group?
Back
Ionization energy generally decreases down a group.
5.
FLASHCARD QUESTION
Front
What is electronegativity?
Back
A measure of the tendency of an atom to attract a bonding pair of electrons.
6.
FLASHCARD QUESTION
Front
Which element has the highest electronegativity in Period 3?
Back
Chlorine (Cl) has the highest electronegativity in Period 3.
7.
FLASHCARD QUESTION
Front
What is the relationship between atomic radius and ionization energy?
Back
As atomic radius increases, ionization energy decreases.
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