1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kirill115 [55]
3 years ago
15

The 488 nm laser is shine on a lithium metal whose work function is 2.9 eV will you be able to see any photoelectrons? if yes wh

at is the kinetic energy of the electrons if no what wavelength of light should be used to see the photoelectrons
Chemistry
1 answer:
nalin [4]3 years ago
3 0

Answer:

There will not be any ejection of photoelectrons

Explanation:

Energy of the photon= hc/λ

Where;

h= Plank's constant

c= speed of light

λ= wavelength of the incident photon

E= 6.6×10^-34 × 3 ×10^8/488 × 10^-9

E= 4.1 ×10^-19 J

Work function of the metal (Wo)= 2.9 eV × 1.6 × 10^-19 = 4.64 × 10^-19 J

There can only be ejected photoelectrons when E>Wo but in this case, E<Wo hence there will not be any ejection of photoelectrons.

You might be interested in
Name this alkane.
Mama L [17]

Answer:

propylcyclopentane

Explanation:

The rest Are swiggly lines and more than 5 sides

7 0
3 years ago
Read 2 more answers
Question 4 what is the term for a group of atoms held together by covalent bonds that bears an overall negative or positive char
erma4kov [3.2K]
Should be a polyatomic ion
4 0
3 years ago
How many hydrogen bonds can CH2O make to water
VladimirAG [237]
Hydrogen bonds are not like covalent bonds. They are nowhere near as strong and you can't think of them in terms of a definite number like a valence. Polar molecules interact with each other and hydrogen bonds are an example of this where the interaction is especially strong. In your example you could represent it like this: 

<span>H2C=O---------H-OH </span>

<span>But you should remember that the H2O molecule will be exchanging constantly with others in the solvation shell of the formaldehyde molecule and these in turn will be exchanging with other H2O molecules in the bulk solution. </span>

<span>Formaldehyde in aqueous solution is in equilibrium with its hydrate. </span>

<span>H2C=O + H2O <-----------------> H2C(OH)2</span>
5 0
3 years ago
Which element is least likely to undergo a chemical reaction?
Trava [24]

Answer:

Helium

Explanation:

Helium is most likely to undergo a chemical reaction because

  • It has a complete electron shell, so it does not need any more electrons
  • Its electrons are closest to the nucleus, so it is extremely difficult to remove them
6 0
3 years ago
Read 2 more answers
What is the SI unit for the mass of subatomic particles?
gogolik [260]

<em>hey, im jordan :)</em>

the SI unit for the mass of subatomic particles is <u>amu (atomic mass unit)</u>

<em>hope this helps!</em>

<em>have a great day :D</em>

4 0
3 years ago
Other questions:
  • Explain the action of steam on a metal​
    9·1 answer
  • Chemical equation of 2 atoms of potassium metal react with 2 molecules of liquid water to produce 2 molecules of Solid potassium
    10·1 answer
  • You cannot round a number if it has a decimal point true or false
    14·1 answer
  • What type of compounds dissolve easily in water?
    6·2 answers
  • What do you think will happen if you pinch your arm after you stub your toe?
    12·2 answers
  • Calculate the molarity of a solution consisting of 60.0 g of NaOH in 1.50 L of solution.
    11·1 answer
  • ¿en que se diferencian la estructura y la función?​
    6·1 answer
  • A solvent was composed of two separate components: water and cyclohexane. If ethyl acetate was added to the solvent, into which
    12·1 answer
  • Pl help it’s for a grade I will give you Brainly
    12·1 answer
  • 32. Why do you think the Cl-ion is larger than a neutral Cl atom?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!