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
serg [7]
3 years ago
13

For hydrogen, what is the wavelength of the photon emitted when an electron drops from a 4p orbital to a 2s orbital in a hydroge

n atom?
Chemistry
1 answer:
Tresset [83]3 years ago
3 0
In Bohr's atomic model, the electrons are orbiting outside in orbitals around the nucleus. The farther the electron is from the nucleus, the lower its energy level becomes. That is why when reactions occur, it is the valence electrons (outermost electrons) that gets involve in the bonding. The way you write an electronic configuration is how the energy levels decreases. The first is orbital 1s which is the highest energy level because it is nearest to the nucleus. Then, it is followed by 2s2p, and so on and so forth. The energy levels are represented by the numbers.

When electrons transfer from orbital to orbital, they may release (high to low) or absorb (low to high) energy in the form of light which can be measuredin wavelength. The formula to be used is Rydberg's formula:

1/λ = R(1/n₁² - 1/n₂²), where

λ is wavelength measured in meters
n₁ and n₂ are the energy levels such that n₂>n₁
R is the Rydberg constant equal to 1.097×10⁷ m⁻¹

1/λ =1.097×10⁷ m⁻¹ (1/2² - 1/4²)
λ = 4.86×10⁻⁷ or 4.86 pm
You might be interested in
Helppppppppppp please
valentinak56 [21]
Your answer would have to be #3
4 0
3 years ago
Isotopes Mg-24,Mg-25 and Mg-26 has natural abundance of 79.0%,10.0% and 11.0%. Calculate the relative atomic mass for isotopes M
Anastasy [175]
79% of Mg-24
10% of Mg-25
11% of Mg-26

18.96 + 2.5 + 2.86 = 24.32u
6 0
3 years ago
The percentage of water vapor present in the air compared to that required for saturation is the ____. a. mixing ratio b. relati
Ivan

Answer:

B. Relative Humidity

7 0
3 years ago
Express 1340000 in scientific notation
Katen [24]
1.34*10^6
Move the decimal 6 times to the left, it is a number 1-10
8 0
3 years ago
Read 2 more answers
Ort
ivanzaharov [21]

Answer:

1 ethanol is right answer

Explanation:

CH3- CH2-OH

4 0
3 years ago
Read 2 more answers
Other questions:
  • A 4Kg rock is rolling 10m/s find it’s kinetic energy
    12·1 answer
  • What will be the kinetic energy change of the ram of a pile driver when it suddenly undergoes a 10 kJ decrease in potential ener
    5·1 answer
  • Consider a cloudless day on which the sun shines down across the United States. If 2014 kJ of energy reaches a square meter( m 2
    6·1 answer
  • C6h12o6 is a type of <br> a. polymer <br> b. carbohydrate <br> c. amino acid <br> d. protein
    12·1 answer
  • The boiling point is the temperature at which (2 points) Select one: a. A solid becomes a liquid b. A liquid becomes a gas c. A
    15·1 answer
  • What would the solubility of the substance likely be if the water was heated to 150 degrees Celsius ?
    8·1 answer
  • The substance in a chemical reaction that ate combined or separated to form new substance are the
    10·1 answer
  • How can a material get a charge?
    10·2 answers
  • 2. Calculate the density of a metal that occupies 17.75 cm and has a mass of 342.93 g. [D = m/V]
    9·1 answer
  • Determine the empirical and molecular formula of a compound composed of its 18.24 g c, 0.51 g h and 16.91 g flourine has a molar
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!