Homework answers / question archive / Q1- Rank the electromagnetic waves from lowest energy (4) to highest energy (1) based on the given wavelengths Question 1 options:   680 nm   1

Q1- Rank the electromagnetic waves from lowest energy (4) to highest energy (1) based on the given wavelengths Question 1 options:   680 nm   1

Chemistry

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Q1- Rank the electromagnetic waves from lowest energy (4) to highest energy (1) based on the given wavelengths

Question 1 options:

 

680 nm

 

1.5 mm

 

1.0 x 10^-3 nm

 

530 µm

Q2-Rank the electromagnetic waves from lowest energy (4) to highest energy (1) based on the given frequencies (Hz = Hertz = 1/s)

options-

6100 Hz

 

530 µHz

 

75 kHz

 

25 mHz

Q3-An atom of calcium absorbs 4.01 x 10^-19 J (J=Joules=units of energy). When the energy is absorbed, an electron moves from the n=3 to the n=4 energy level. When the electron moves down fro the n=4 to the n=3 energy level, a purple coloured light is seen. What is the energy of purple light?

Question 3 options:

 

4.85 x 10^-19 J

 

4.848 x 10^-19 J

 

3.1 eV

 

Insufficient information

 

4.01 x 10^-19 J

 

400 nm

 

Energy in the range 0 to 4 4.01 x 10^-19 J

Q4-What is the maximum number of electrons that can fit into the n=2 energy level?

Q5-A new type of orbtital has been discovered and named the m-orbital. It has 9 subshells. How many total electrons can fit in an m-type orbital?

Q6-What atom has the electron configuration [Ar]3s²

Q7-How many core electrons are found in fluorine?

Q8-Which element has 1 valence electron found in the n=4 energy level

Question 8 options:

 

lithium

 

sodium

 

potassium

 

rubidium

Q9-Rank the following atoms from smallest atomic radius (4) to largest atomic radius (1).

Question 9 options:

 

Si

 

Na

 

Al

 

S

Q10- Rank the following atoms from lowest ionization energy (4) to highest ionization energy (1).

Question 10 options:

 

S

 

O

 

Te

 

Se