What is the electron configuration of an oxygen atom?
Chemistry Sem 1 Performance Final Review

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Chemistry
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9th - 10th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
1s² 2s² 2p⁴
2.
FLASHCARD QUESTION
Front
What type of bond involves an equal sharing of electrons?
Back
Non Polar Covalent
3.
FLASHCARD QUESTION
Front
How many valence electrons are present in atoms of group 14?
Back
4
4.
FLASHCARD QUESTION
Front
Why are halogens considered highly reactive?
Back
They only need one more electron to achieve a full outer shell.
5.
FLASHCARD QUESTION
Front
What is the chemical formula for Phosphorus tribromide?
Back
PBr₃
6.
FLASHCARD QUESTION
Front
What is the significance of valence electrons in chemical bonding?
Back
Valence electrons determine how an atom can bond with others and its reactivity.
7.
FLASHCARD QUESTION
Front
What is the difference between polar and nonpolar covalent bonds?
Back
Polar covalent bonds involve unequal sharing of electrons, while nonpolar covalent bonds involve equal sharing.
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