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
Rasek [7]
3 years ago
7

What is the electron configuration of neptunium?

Chemistry
1 answer:
UkoKoshka [18]3 years ago
7 0
This is the electron configuration of neptunium:
<span>Rn 5f4 6d1 7s2
</span>or, if you want to complicate:
<span>1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f4 6d1
</span>Since there are 93 electrons, they make up 5f4 altogether.
You might be interested in
A compound has an empirical formula of Na2CO3 and a molar mass of 318g/mol. Find its
GalinKa [24]

Answer:4

Explanation:

3 0
3 years ago
This lab question is: How can you distinguish a physical change from a chemical change?
geniusboy [140]

Answer:b,and c

Explanation:

4 0
3 years ago
Suppose that you want to compare the mass of a block of ice to its mass as liquid
Morgarella [4.7K]

Answer:

You will find the mass of the pan and water but if the water got to its boiling temperature that mass may be a little bit off seeing as some of it may have evaporated

5 0
3 years ago
Consider the equations below. (1) Fe2O3(s) → 2Fe(s) + 3 2 O2(g) (2) Fe2O3(s) + 3CO(g) → 2Fe(s)+3CO2(g) Which equation must be ad
slega [8]

Answer:

C. 3CO(g)+\frac{3}{2}O2(g)→3CO2(g)

Explanation:

7 0
3 years ago
In IR spectroscopy, we normally talk about "frequencies" when in reality we are referring to wavenumbers. What is the mathematic
Svetach [21]

Answer:

Here's what I get.

Explanation:

(b) Wavenumber and wavelength

The wavenumber is the distance over which a cycle repeats, that is, it is the number of waves in a unit distance.

\bar \nu = \dfrac{1}{\lambda}

Thus, if λ = 3 µm,

\bar \nu = \dfrac{1}{3 \times 10^{-6} \text{ m}}= 3.3 \times 10^{5}\text{ m}^{-1} = \textbf{3300 cm}^{-1}

(a) Wavenumber and frequency

Since

λ = c/f and 1/λ = f/c

the relation between wavenumber and frequency is

\bar \nu = \mathbf{\dfrac{f}{c}}

Thus, if f = 90 THz

\bar \nu = \dfrac{90 \times 10^{12} \text{ s}^{-1}}{3 \times 10^{8} \text{ m$\cdot$ s}^{-1}}= 3 \times 10^{5} \text{ m}^{-1} = \textbf{3000 cm}^{-1}

(c) Units

(i) Frequency

The units are s⁻¹ or Hz.

(ii) Wavelength

The SI base unit is metres, but infrared wavelengths are usually measured in micrometres (roughly 2.5 µm to 20 µm).

(iii) Wavenumber

The SI base unit is m⁻¹, but infrared wavenumbers are usually measured in cm⁻¹ (roughly 4000 cm⁻¹ to 500 cm⁻¹).

8 0
3 years ago
Other questions:
  • At a party, you see someone on the floor with grayish skin, having
    15·2 answers
  • In the solubility lab, what did you change the temperature of
    10·1 answer
  • Which of the following would be considered a solution?
    8·1 answer
  • Explain how changes in pressure affect the rate and yield of ammonia produced
    10·1 answer
  • Can you think of 2 renewable resources and 2 nonrenewable resources
    6·2 answers
  • . Write the two resonance hybrids for the carbocation that would be formed by protonation at C-1 of 2-methyl-1,3-pentadiene. Wit
    15·1 answer
  • A geologist finds an area with a lot of slate, a type of metamorphic rock, on the surface of the land. What might this indicate
    9·1 answer
  • HELP ASAP ITS URGENT FOR A GRADE
    13·2 answers
  • How did the masses of objects affect the strength of gravity
    7·1 answer
  • Write the electronic configuration for 40/20 Ca
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!