Electronegativity sheet answers key PDF

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yesssss really important sheet of electronegativity 9th grade...

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Electronegativity Worksheet 1. How are ionic bonds and covalent bonds different? -Ionic bonds are the result of giving or taking electrons. Whereas covalent bonds are the result of sharing electrons.

2. How does a polar covalent bond differ from a non-polar covalent bond?

When two atoms share a pair of electrons equally its a nonpolar covalent bond but when they share it inequally then it’s polar.

3. How do electronegativity values help us determine the polarity of a bond?

The more there is difference in electronegativity, the more a bond is polarised

4. Fill in the values to complete the following table for predicting bond type based on differences in electronegativity. 0.0 _______ _______ ______ 0.5 Non-polar Covalent bond

2.1 Polar Covalent Bond

3.3 Ionic Bond

5. Does electronegativity increase or decrease when you go across a period on the periodic table? Does it increase or decrease when you move down a group on the periodic table? Electronegativity increases across a period and decreases down a group.

6. For each of the following sets of elements, identify the element expected to be most electronegative (circle) and which is expected to be least electronegative (cross out), based on their position in the periodic table.

.

Use the table of electronegativities, above, to determine which type of bond should be formed between the two atoms.

7.

Atom 1

Atom 2

Phosphorus

Silicon

Electronegativity Difference Value

Si ( 1.90) P (2.19)

Bond Type (Non-polar Covalent, Polar, Ionic)

Si= Covalent bond P= Covalent bond

8.

Cobalt

Bromine

C (1.88) Br (2.8)

9.

Germanium

Selenium

Se (2.55) G ( 2.01)

10.

Silicon

Fluorine

Si (1.90) F (3.98)

11.

Potassium

Nitrogen

K (0.82) Na( 0.93)

12.

Cesium

Oxide

Cs (0.79) O( 3.5)

13.

Hydrogen

Phosphorus

P (2.19) H(2.2)

14.

Arsenic

Chloride

As(2.18) CI( 3.0)

15.

Lithium

Chloride

CI(3.0) Li( 0.98)

16.

Iron

Carbon

Fe( 1.83) C (2.5)

Br= covalent bond C= Metallic bond G= Covalent bond Se= Covalent bond F= Polar covalent Si= Polar covalent N= Ionic bond K= Ionic bond C= Ionic bond O=Ionic bond H= Non-polar covalent P= Non-polar covalent

A=covalently-bonded CI= covalently- bonded Li= Ionic bond CI= Ionic bond Fe= covalent bond C= covalent bond...