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4 cards from this section. Quick, good the night before a test.
What is valency?
Think about what it means when atoms join together.
How many valence electrons does sodium have?
Check the position of sodium in the periodic table.
What is the valency of carbon with 4 valence electrons?
Refer back to what you learned about elements with exactly 4 valence electrons.
True or False: Atoms with more than 4 valence electrons will have a valency equal to the number of those electrons.
Remember the two rules we discussed!
An element has 5 valence electrons. Calculate its valency and predict how it might bond with other elements.
Use the valency rule for elements having more than 4 valence electrons.
Bromine (Br) has 7 valence electrons. Determine its valency and explain its likely behavior in a chemical reaction.
Remember the implications of the octet rule when calculating valency.
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