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
skad [1K]
3 years ago
14

In which orbitals would the valence electrons for selenium (Se) be placed?

Chemistry
2 answers:
RSB [31]3 years ago
8 0
Selenium falls in the same column with oxygen therefore it has the same number of valence electrons with oxygen which is 6. It fills the 3d orbital but only 4s and 4p are counted. The electronic configuration is [Ar]3d^10 4s^2.
elixir [45]3 years ago
8 0

Selenium falls in the same column with oxygen therefore it has the same number of valence electrons with oxygen which is 6. It fills the 3d orbital but only 4s and 4p are counted. The electronic configuration is [Ar]3d^10 4s^2

Explanation:

Selenium has 6 valence electrons, two of which are placed in the S orbital and 4 of which are placed in the P orbital. In its electron structure, it is quite comparable to oxygen.

At the first energy level, the only orbital accessible to electrons is the 1s orbital, but at the next level, as well as a 2s orbital, there are 2p orbitals. A p orbital is formed like 2 identical balloons tied commonly at the nucleus. The orbital shows where there is a 95% chance of getting a critical electron.

You might be interested in
As atoms get smaller,valance electrons are getting closer or farther away from the nucleous.The force of attraction is stronger
LiRa [457]

Explanation:

Electrons are closer to the nucleus are in filled orbitals and are called core electrons. More energy which in nucleus called nuclear strOng energy to remove electron thars why its also a way harder too..

3 0
2 years ago
Help please ill do anything really!!!!!!!
Volgvan

Answer:

The first one is air the second is decreases the third is water the fourth is gas and the last is liquid.

Explanation:

Hope it helps.

5 0
3 years ago
Identify the major attractive force in HF molecules.A) London Dispersion Forces (LDFs)
Llana [10]

Answer:

C) hydrogen bonding

Explanation:

All atoms and molecules have London Dispersion Forces between them, but they are usually overshadowed but the much stronger forces. In this scenario the major attractive force in HF molecules are hydrogen bonds. Hydrogen bonds are electrostatic forces of attraction found when Hydrogen is bonded to a more electronegative atom such as Oxygen, Chlorine and Fluorine.

6 0
3 years ago
How many grams of diphosphorus pentoxide result if 100.0 g of phosphorus are combined with sufficient oxygen?
gregori [183]
Answer is: 230 g.
Chemical reaction: P₄ + 5O₂ → 2P₂O₅.
m(P₄) = 100 g.
M(P₄) = 4 · 31 g/mol = 124 g/mol.
n(P₄) = m(P₄) ÷ M(P₄) = 100g ÷ 124g/mol = 0,806 mol.
From reaction: n(P₄) : n(P₂O5) = 1 : 2.
n(P₂O₅) = 1,612 mol.
m(P₂O₅) = 1,612 mol · 142g/mol = 230g.
M - molar mass.
n - amount of substance.
3 0
3 years ago
1. Is O2 a compound? Explain.
zhuklara [117]
1. O2 is not a compound because it only contains one or more type of the same element atom.
2. O2 is a molecule because a molecule is one or more of the same element atom.
3. The law of conversion is that the mass of the system will stay the same when transfer takes place. Like if you had an equation O+H2—> H2O the mass will remain the same.

4. It will be equal to 10 because of law of conservation of matter.

5. One observation can be that the compound, reaction you’re observing, has change states.

4 0
3 years ago
Other questions:
  • El sol es la estrella más grande
    5·1 answer
  • The equilibrium constant of a reaction: A) is not related to the change in free energy of the reaction. B) is the same as the ma
    10·1 answer
  • When calculating the density of a liquid you measure 8.2 ml in a graduated cylinder with markings every 1 ml and measure the mas
    6·1 answer
  • Is air a conductor or insulator
    13·2 answers
  • Please help, I'm struggling with stoichiometry
    6·1 answer
  • The word "atom" means:
    7·1 answer
  • . Give the symbols of TWO elements that are in the same group.
    5·1 answer
  • Which is one piece of information that "9” gives about an atom of fluorine?
    14·2 answers
  • How is a pure substance different from a mixture? A.Pure substances are separated by physical means B. Mixtures cannot be separa
    13·1 answer
  • Pls help me out with this question!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!