Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.
PERIODIC TRENDS

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Chemistry
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11th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
increases, decreases
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
Why are elements towards the bottom of a group more reactive than those at the top?
Back
The electrons are farther from the nucleus.
4.
FLASHCARD QUESTION
Front
As you move down a group, atomic radius increases because -
Back
You add more and more shells (energy levels).
5.
FLASHCARD QUESTION
Front
What elements are the 'd-block'?
Back
Transition Metals
6.
FLASHCARD QUESTION
Front
What is the trend of atomic radius as you move from left to right across a period?
Back
Atomic radius decreases.
7.
FLASHCARD QUESTION
Front
What is ionization energy?
Back
The energy required to remove an electron from an atom.
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