3588600
Description
Quiz by Nyasha Makunga, updated more than 1 year ago
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Created by Nyasha Makunga
over 9 years ago
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Question 1
Question
A central atom bonded to 6 negative regions with 2 pairs of lone pairs is called...?
Answer
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sea-saw
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square planar
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square pyramid
Question 2
Question
Which of these apply to drawing lewis structures?
Answer
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Count total number of valence electrons.
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Underline the central atom
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The atom that is the "most electron needy," ( the one which is further right on the periodic table) is placed in the middle.
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Link other atoms to the central atom using single covalent bond (- =2e).
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All the atoms must contain 8 electrons except Be=4 , B=6 and H=2
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If an atom has insufficient electrons, take a lone pair from a neighbour and create multiple bonds between them.
Question 3
Question
Which of these have a polar bond.
Answer
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H-H
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H-F
Question 4
Question
What makes a molecule polar?
Answer
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Same atoms bonded together
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Different atoms bonded together
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3D symmetrical molecule
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3D asymmetrical molecule
Question 5
Question
The shape of the PCl3 molecule is trigonal pyramid.
Answer
- True
- False
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