Molecules: Shapes & Forces (AQA A-Level Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What scale is used to measure electronegativity?
What scale is used to measure electronegativity?
Pauling scale
What happens to electronegativity across a period from left to right?
What happens to electronegativity across a period from left to right?
It increases
Why does electronegativity decrease down a group?
Why does electronegativity decrease down a group?
Atomic radius increases & shielding occurs
Which element is the most electronegative with a value of 4.0?
Which element is the most electronegative with a value of 4.0?
Fluorine
What characterises a non-polar covalent bond?
What characterises a non-polar covalent bond?
Equal/similar electronegativity
In a polar bond, where is the partial charge located?
In a polar bond, where is the partial charge located?
On the more electronegative atom
Why does have a permanent dipole?
Why does have a permanent dipole?
Bent shape causes net dipole
Why is non-polar despite having polar bonds?
Why is non-polar despite having polar bonds?
Symmetrical shape cancels dipoles
What electronegativity difference range indicates a polar covalent bond?
What electronegativity difference range indicates a polar covalent bond?
0.5 - 1.7