What is the trend in atomic radius as you move down a group in the periodic table?
Chemistry Sem 1 Exam Review

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Science
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10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The atomic radius increases as you move down a group due to the addition of electron shells.
2.
FLASHCARD QUESTION
Front
What is the electron configuration for the element Neon (Ne)?
Back
The electron configuration for Neon is 1s² 2s² 2p⁶.
3.
FLASHCARD QUESTION
Front
Which molecular geometry is associated with three bonding pairs and no lone pairs?
Back
Trigonal planar molecular geometry.
4.
FLASHCARD QUESTION
Front
Who discovered the electron?
Back
J.J. Thomson is associated with the discovery of the electron.
5.
FLASHCARD QUESTION
Front
What is the correct ionic formula for the compound formed between sodium and sulfur?
Back
The correct ionic formula is Na₂S.
6.
FLASHCARD QUESTION
Front
What is the definition of an ion?
Back
An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.
7.
FLASHCARD QUESTION
Front
What is the principle behind the VSEPR theory?
Back
The VSEPR theory states that the shape of a molecule is determined by the repulsion between electron pairs around a central atom.
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