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
Rust forms because iron and oxygen are highly ______ elements.
Oliga [24]

IT forms because they are highly reactive elements.

6 0
3 years ago
Construct <br> an isotope has 17 protons 20 neutrons and 18 electrons
ASHA 777 [7]
Add proton + neutrons = Mass 37

Proton is same as your atomic mass= 17

If you go on the periodic table look up 17 and it will give u the letter.
4 0
3 years ago
A sample of water at 20 degrees c contains what bonds
vladimir2022 [97]
Covalent and hydrogen bonds

3 0
3 years ago
Which of the following describes a condition in which an individual would not hear an echo?
egoroff_w [7]

The correct answer is D.

Echo refers to the sound that is heard when a sound wave is reflected back from a surface. An echo sound is made when a sound wave traveled through the air, hit a hard surface and get reflected back. Generally, hard surfaces reflect sound wave while soft surfaces absorb sound waves. Reflected sound waves are used in application of some devices that are used in range and direction finding.

4 0
3 years ago
Read 2 more answers
Explain why mixing of red paint with white paint does not constitute a chemical reaction even though the product has a different
MArishka [77]

Answer:

Explanation:

In a chemical change through chemical reactions, a new kind of matter forms. When a paint is mixed together, a physical change has occurred and not a chemical change. The different color one perceives is just a mere overlap between the reflected white and red color which produces another hue.

Not all color changes infers a chemical reaction. A paint is a complex mixture on its own.

5 0
3 years ago
Other questions:
  • A pump contains 0.5 l of air at 203 kpa. you draw back on the piston of the pump, expanding the volume until the pressure reads
    11·1 answer
  • What is the difference between applied and pure chemistry?
    5·1 answer
  • When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction CaCO3(s)→CaO(s)+CO2(
    7·1 answer
  • 1. Living things<br> are<br> with each other<br> and the<br> environment.
    9·1 answer
  • What is the difference between a compound and a mixture? Group of answer choices One is a solid and the other is a liquid. They
    10·1 answer
  • Calculate the mass of ethylene glycol (C2H6O2) that must be added to 1.00 kg of ethanol (C2H5OH) to reduce its vapor pressure by
    13·1 answer
  • The elements carbon nitrogen and oxygen are all part of the same blank on the periodic table.
    9·2 answers
  • In the periodic table of elements,all <br>the elements in group 16 have the same number of what
    9·2 answers
  • A very flammable substance would not be used in children’s clothing. please select the best answer from the choices provided t f
    7·1 answer
  • Convert the boiling temperature of liquid ammonia, -28.1 degree fahrenheit, into degrees celsius and kelvin.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!