Quiz | Structure and Bonding in Organic Molecules

1

What is the electron configuration of bromine? (Z=35)

1s2 2p6 2s2 3d10 3p6 3s2 4f7

1s2 1p6 2s2 2p6 2d10 3s2 3p6 3d1

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5

1s2 2s2 2d6 3s2 3d6 4s2 3p10 4d5

2

What is the most stable ion of calcium? (Z=20)

Ca+

Ca2+

Ca-

Ca2-

3

What is the most stable ionic compound formed by sodium (Z=11) and oxygen (Z=8)?

 

NaO

NaO2

Na2O2

Na2O

4

Draw one of the resonance structures of SO3. The formal charge of S is:

– 1

0

+ 1

+ 2

5

What is the geometry of C2Br4?

linear

trigonal plan

tetrahedral

pyramidal

6

With regard to species O2-816 and Ne1020, which of the following statements is correct?

They have the same number of electrons

They have the same number of neutrons

They have the same number of protons

None of the above

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