Properties of elements flashcard
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are valence electrons?
Back
Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.
2.
FLASHCARD QUESTION
Front
Which group of the periodic table has the most valence electrons?
Back
Group 18 (Noble gases) has the most valence electrons, which is 8, except for Helium which has 2.
3.
FLASHCARD QUESTION
Front
Why are elements in group 17 reactive?
Back
Elements in group 17 are reactive because they need one more electron to fill their outer shell.
4.
FLASHCARD QUESTION
Front
What is the electron configuration of elements in group 1?
Back
Elements in group 1 have one electron in their outer shell.
5.
FLASHCARD QUESTION
Front
What happens to the number of valence electrons across a period in the periodic table?
Back
The number of valence electrons increases from left to right across each period.
6.
FLASHCARD QUESTION
Front
What is true about elements with 7 electrons in their outer shell?
Back
They are reactive because they want to gain an electron to fill their outer shell.
7.
FLASHCARD QUESTION
Front
How many valence electrons do elements in group 2 have?
Back
Elements in group 2 have two valence electrons.
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