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
Verizon [17]
3 years ago
7

The following ions contain the same number of electrons. Rank them in order of decreasing ionic radii. Rank from largest to smal

lest radius. To rank items as equivalent, overlap them. se3+ cl-
Chemistry
1 answer:
solong [7]3 years ago
8 0

Cl- < Se3+ is the decreasing order of ionic radii of the two ions.

Explanation:

Atomic number of Se= 34 Se3+ will have 31 electrons (+ sign indicates loss of electron)

Atomic number of chlorine is 17, Cl- will have 18 electrons (- sign shows gain of electrons)

Number of electrons in their valence shell:

Se3+ = 2,8,18,3

Cl- = 2,8,8

The Se3+ atoms have K.L.M.N shells while Cl- K,L,M shells

The size of the ions is based on the effective nuclear charge on the ion. The loss in electron causes small cation and gain in electron causes increase in anion size.

The number of occupied shells more the number more is the ionic radii.

Se3+ will have large ionic radii as Se+ has four filled shells.

Cl- < Se3+ (decreasing order of ionic radii)

You might be interested in
What would happen if carbon -14 gained 1 proton and lost 1 neutron?
sleet_krkn [62]
D. To answer this question refer to the periodic table and think logically about it. Adding one proton increases the atomic number so you go along the row to Nitrogen. If you lose one neutron then the atomic mass decreases by 1 so 14-1 is 13.
4 0
3 years ago
In a 1.0-liter container there are, at equilibrium, 0.10 mole h2, 0.20 mole n2, and 0.40 mole nh3. what is the value of kc for t
bogdanovich [222]
The reaction involved here would be written as:

2N2 + 3H2 = 2NH3

The equilibrium constant of a reaction is the ratio of the concentrations of the products and the reactants when in equilibrium. The expression for the equilibrium constant of this reaction would be as follows:

Kc = [NH3]^2 / [N2]^2[H2]^3
Kc = 0.40^2 / (0.20)^2 (0.10)^3 
Kc = 4000
6 0
3 years ago
What group of substances does this substance belong to?
HACTEHA [7]
In comparison see it is very easy in goolge
4 0
3 years ago
He wants to increase the energy of emitted electrons . Based on the research of Albert Einstein, what is the best way for him to
pishuonlain [190]

To increase the energy of the emitted electrons, the frequency of the incident light on the metal must be increased.

<h3>What is energy of emitted electron?</h3>

The maximum energy of an emitted electron is equal to the energy of a photon for frequency f (E = hf ), minus the energy required to eject an electron from the metal's surface, also known as work function.

Ee = E - W

<h3>Energy of the emitted electron</h3>

The energy of emitted electrons based on the research of Albert Einstein is given as;

E = hf

where;

  • h is planck's constant
  • f is frequency of incident light on the metal

Thus, to increase the energy of the emitted electrons, the frequency of the incident light on the metal must be increased.

Learn more about energy of electron here: brainly.com/question/11316046

#SPJ1

8 0
2 years ago
Is this example of a direct proportion or an inverse proportion?
ivanzaharov [21]

Answer:

Inverse proportion occurs when one value increases and the other decreases. For example, more workers on a job would reduce the time to complete the task. They are inversely proportional.

6 0
3 years ago
Other questions:
  • Thiamine (vitamin B1) deficiency diseases have a lower prevalence now than in the past. However, they are seen as beriberi in so
    12·1 answer
  • Self explanatory what’s the answers ?
    13·1 answer
  • Compare the vapor pressure curves of 1-butene and 1-heptene. Explain your reasoning.
    14·2 answers
  • Mercury is an element. Which of the following would be the same for all atoms of mercury?
    6·2 answers
  • You need to decontaminate water cans previously used for nonpotable water. You calculate that five gallons of disinfecting solut
    6·1 answer
  • Help please? I really need to finish this. A response would be helpful :)
    9·2 answers
  • At 1:00 P.M., the air temperature was 78°F, and air pressure was 30.0 inches of mercury with partly cloudy skies. By 4:00 P.M.,
    11·2 answers
  • La agencia de protección al ambiente de Estados Unidos para
    10·1 answer
  • PLEASE HELP WILL AMRK BRAINLIEST<br> what is the atomic mass of Na3PO4?
    9·2 answers
  • An ion of a single pure element always has an oxidation number of ________. a. 1 b. magnitude equal to its atomic number c. 0 d.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!