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
m_a_m_a [10]
3 years ago
7

Phosphorus can be stable with 12 electrons in its valence structure while nitrogen can never have more than 8 electrons in its v

alence shell. Explain this phenomena?
Chemistry
1 answer:
dolphi86 [110]3 years ago
8 0

Here we have explain that the maximum possible electrons present in nitrogen valence shell is 8 whereas in phosphorous 12 valence electrons are present.

Although both nitrogen (N) and phosphorous (P) belongs to the same series there are several properties which are different between both the element. The number of electrons present in nitrogen is seven which are present in the -s and -p orbitals. The electronic configuration of nitrogen is 1s²2s²2p³. In which the outermost electrons are the valence electrons i.e. 5 valence electrons are present. The maximum orbitals are possible under the principal quantum number 2 are -s and -p orbitals. Now the maximum capacity of the p orbital to contain 6 electrons, as it is half filled in nitrogen another 3 electrons can be incorporated. Thus the maximum number of electrons can be present in nitrogen is 10 among which 8 is the valence electrons.

On the other hand there are 15 electrons in phosphorous the electronic configuration is 1s²2s²2p⁶3s²3p³. Now the principal quantum number 3 can have three orbitals -s, -p and -d. So another 13 electrons can be incorporated (3 in -p orbital and 10 in -d orbital) among which upto 12 electrons can be its valence electrons.

You might be interested in
Which of the following would have the highest average kinetic energy?
IgorLugansk [536]

Answer:

N₂ gas at 50 °C.

Explanation:

  • From the postulates of the kinetic theory of gases; <em>all gases at a given temperature have the same average kinetic energy</em>.
  • The average kinetic energy of gases can be calculated from the relation: K = \frac{3 R}{2NA} T.

Where, K is the average kinetic energy (measured in Joule),

R is the general gas constant (R = 8.314 J/mol.K)

NA is Avogadros number (6.023 x 10²³ atoms/mol)

T is the temperature (measured in Kelvin).

  • It is clear from the relation that K depends only on the temperature.
  • So, N₂ gas at 50 °C has the highest average kinetic energy since it is at the higher temperature than other gases.


8 0
3 years ago
A solution is prepared from 26.7 g of an unknown compound and 116.2 g acetone, C3H6O, at 313 K. At this temperature the vapor pr
Cloud [144]

Answer:

The molecular weight of the unknown compound is 267.7 g/mol

Explanation:

Lowering vapor pressure → Colligative property where the vapor pressure of solution is lower than vapor pressure of pure solvent

ΔP = P° . Xm

0.526 atm - 0.501 atm = 0.025atm

0.025 atm = 0.526 atm . Xm

Xm = 0.025 atm / 0.526 atm → 0.0475 (mole fraction)

Mole fraction = Moles of solute / Total moles (solute + solvent)

0.0475 = Moles of solute / Moles of solute + Moles of solvent

We determine the moles of solvent → 116.2 g . 1mol / 58 g = 2 moles

0.0475 = Moles of solute / Moles of solute + 2

0.0475 moles of solute + 0.095 = Moles of solute

0.095 = Moles of solute - 0.0475 moles of solute

0.095 / 0.9525 = Moles of solute → 0.0997 moles

Molas mass = g/mol → 26.7 g / 0.0997 mol = 267.7 g/mol

4 0
3 years ago
Magnesium hydroxide is used as an antacid in milk of magnesia and reacts with hydrogen chlrode in the stomach to form water and
8_murik_8 [283]
Mg(OH)2 +2HCl---> MgCl2+2H2O
3 0
3 years ago
A 35.0 mL sample of 1.00 M KBr and a 60.0 mL sample of 0.600 M KBr are mixed. The solution is then heated to evaporate water unt
Katarina [22]

Answer: The molarity of KBr in the final solution is 1.42M

Explanation:

We can calculate the molarity of the KBr in the final solution by dividing the total number of moles of KBr in the solution by the final volume of the solution.

We will first calculate the number of moles of KBr in the individual sample before mixing together

In the first sample:

Volume (V) = 35.0 mL

Concentration (C) = 1.00M

Number of moles (n) = C × V

n = (35.0mL × 1.00M)

n= 35.0mmol

For the second sample

V = 60.0 mL

C = 0.600 M

n = (60.0 mL × 0.600 M)

n = 36.0mmol

Therefore, we have (35.0 + 36.0)mmol in the final solution

Number of moles of KBr in final solution (n) = 71.0mmol

Now, to get the molarity of the final solution , we will divide the total number of moles of KBr in the solution by the final volume of the solution after evaporation.

Therefore,

Final volume of solution (V) = 50mL

Number of moles of KBr in final solution (n) = 71.0mmol

From

C = n / V

C= 71.0mmol/50mL

C = 1.42M

Therefore, the molarity of KBr in the final solution is 1.42M

5 0
3 years ago
An aqueous solution has a hydroxide-ion concentration of 1.0 x 10-3M. What is the pH of the solution?
alexandr402 [8]
11 with pemdas, you have to multiply all by 3
8 0
3 years ago
Other questions:
  • How do kidneys work with other body systems to maintain homeostatis
    11·1 answer
  • What is the balanced equation for the combustion of sulfur
    9·1 answer
  • How would you classify the fossil fuel, petroleum, in terms of a resource? Justify your answer in two or more complete sentences
    14·1 answer
  • The central atom in a certain molecule has 1 nonbonded electron pairs and 2 bonded electron pairs in its valence shell. the mole
    9·1 answer
  • When making a guess, you are forming a_______.
    12·2 answers
  • I was too afraid we wouldn't be let in if l corrected the man's pronunciation, but I said our name to myself, opening my mouth w
    5·2 answers
  • Identify the number of atoms in 2CA(SO4) 2
    13·1 answer
  • What is the resistance of a blub when the voltage across is 6 V and the current is 0.2A?
    14·1 answer
  • Balance the equation <br><br> CsOH + Fe2(SO3)3 —&gt; <br><br> Fe(OH)3 + Cs2SO3
    13·1 answer
  • What are Chemical Calculations ?​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!