Chemistry, 10.07.2019 17:00 getsic

The first ionization energy of na(g) is 0.50 mj/mole. can a photon with a wavelength of 500 nm ionize a sodium atom? explain.

Answers: 1

Show answers

Answers

Answer from: Ramel360

No, a photon with a wavelength of 500 nm can't ionize a sodium atom.

Explanation:

Step 1: Find out Energy of given wavelength:

The relation between wavelength and frequency is as follow,

υ = c / λ

where

υ = frequency = ?

c = velocity of light = 3.0 × 10⁸ ms⁻¹

λ = wavenumber = 500 nm = 500 × 10⁻⁹ m

Putting the given values,

υ = 3.0 × 10⁸ ms⁻¹ / 500 × 10⁻⁹ m

υ = 6.0 × 10¹⁴ s⁻¹

Also we know that,

E = h υ

Where;

E = Energy

h = Plank's Constant = 6.6262 × 10⁻³⁴ Js

Putting value of frequency,

E = 6.6262 × 10⁻³⁴ Js × 6.0 × 10¹⁴ s⁻¹

E = 3.97 × 10⁻¹⁹ J

Step 2: Compare given energy and calculated energy:

As we know,

0.5 mJ = 500000 J

Also,

500000 J > 3.97 × 10⁻¹⁹ J

Conclusion:

The energy of calculated wavelength of photon is less than 0.5 mJ hence, it is unable to ionize sodium atom.

Answer from: jones03riley

No, a photon with a wavelength of 500 nm cannot ionize a sodium atom. This is because energy of the photon is less than the energy required to ionize a single gaseous sodium atom.

Explanation:

The first ionization energy of Na(g) is 0.50 MJ/mole = $5\times 10^5 J/mol$

1 Mega Joule = 10^6 J

The first ionization energy of 1 Na(g) atom = $E_s=\frac{5\times 10^5 J/mol}{6.022\times 10^{23} mol^{-1}}=8.3028\times 10^{-19} J$

If we have a photon of wavelength = 500 nm = $5.00\times 10^{-7} m$

$1 nm = 10^{-9} m$

$E=\frac{h\times c}{\lambda}$

E = energy of photon = ?

$\lambda$ = wavelength

h = Planck's constant = $6.63\times 10^{-34}Js$

c = speed of light = $3\times 10^8m/s$

$E=\frac{6.63\times 10^{-34}J s\times 3\times 10^8 m/s}{5.00\times 10^{-7}m}=3.978\times 10^{-19} J$

Energy of the photon = E = $3.978\times 10^{-19} J$

As we can see that , E_sE

Photon of this wavelength will not able to ionize the sodium atom.This is because energy of the photon is less than the energy required to ionize a single gaseous sodium atom.

A photon with a wavelength of 500 nm cannot ionize a sodium atom.

Answer from: Quest

the answer is option a.

Answer from: Quest

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants

Another question on Chemistry

Chemistry, 21.06.2019 19:00

State the formula for density in words and mathematical symbols

Answers: 2

Answer

Chemistry, 21.06.2019 22:00

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Answers: 2

Answer

Chemistry, 21.06.2019 22:30

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

Answers: 1

Answer

Chemistry, 22.06.2019 05:00

Which position represents spring in the southern hemisphere? a) b) c) d)

Answers: 2

Answer

You know the right answer?

The first ionization energy of na(g) is 0.50 mj/mole. can a photon with a wavelength of 500 nm ioniz...