4.) The seven elements that occur as diatomic elements are a.) Fe2, Rn2, O2, He2

ID: 1052501 • Letter: 4

Question

4.) The seven elements that occur as diatomic elements are

a.) Fe2, Rn2, O2, He2, Ne2, C2, Br2

b.) H2, N2, O2, He2, Ne2, C2, Na2

c.)H2, N2, O2, F2, Cl2, Br2, I2

d.) H2, N2, O2, He2, Ne2, Cl2, Br2

5.) In the correct Lewis structure for water, how many unshared pairs of electrons will oxygen have?

a.) 1

b.) 2

c.) 3

d.) 4

6.) By referring only to the periodic table, which of the following element is the most electronegative?

a.) Flourine.

b.) Oxygen.

c.) Nitrogen.

d.) Hydrogen.

4. c.)H2, N2, O2, F2, Cl2, Br2, I2

All halogen elements are diatomic molecules. F2,Cl2,Br2,I2

H2,N2,O2 are diatomic gases

5. H2O central atom contains two unshares electrons and two bons pair of electrons

H-:O: --H

6. a.) Flourine.

in the periodic table more electronegative element is F

E.N

F= 4

O = 3.5

N= 3

Cl = 3

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