Explain which molecule is polar

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Reference no: EM13175157

1. Which molecule is polar?

a. BF3

b. H2Se

c. N2

d. GeF4

e. CO2

2. Which of the following is not an ionic compound?

a. MgCl2

b. NaOH

c. NaF

d. FCl3

e. CaO

3. Which of the following is not an ionic compound?

a. TiCl4

b. MgO

c. CH4

d. Na2S

e. LiF

4. Which ionic compound is expected to have the highest melting point?

a. Li3N

b. BN

c. MgF2

d. Na2O

e. LiCl

5. Which combination below corresponds to the H+ ion?

a. 2 protons and 1 electron

b. 1 proton and 2 electrons

c. 2 protons and 3 electrons

d. 1 proton and 1 electron

e. None of the above

6.According to the Bohr equation, electromagnetic radiation with the shortest wavelength will be emitted when an electron undergoes which of the following transitions?

A) n = 1 â†' n = 2

B) n = 2 â†' n = 3

C) n = 3 â†' n= 1

D) n = 3 â†' n= 2

Reference no: EM13175157

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