Practice Valence Electrons And Valency (4.5) - Atomic Structure and Chemical Bonding

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6 sample questions

Question 1.
What are valence electrons?
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Think about which electrons are responsible for chemical bonding.
Question 2.
What is the valency of sodium (Na) which has 1 valence electron?
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How many electrons does it need to lose or share?
3Question 3.
What are valence electrons?
- Electrons in the outermost shell of an atom
- Electrons in the nucleus
- All electrons in an atom
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Think about which electrons are involved in bonding.
4Question 4.
True or False: The valency of an atom is always equal to the number of valence electrons.
- True
- False
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Consider how atoms achieve stable configurations through bonding.
Question 5.
Calculate the valency of nitrogen (N) which has 5 valence electrons, and explain how it bonds with hydrogen (H).
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Consider how many more electrons nitrogen needs to reach 8.
Question 6.
Discuss how the valencies of magnesium (Mg) and chlorine (Cl) allow them to form an ionic bond.
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Look at how they both achieve stability through electron transfer.

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