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
aev [14]
3 years ago
6

Which electrons in a calcium atom in the ground state have the greatest effect on the chemical properties of calcium

Chemistry
2 answers:
JulsSmile [24]3 years ago
6 0

Answer is: the two electrons in the fourth shell.

Atomic number of calcium is 20, it means that it has 20 protons and 20 electrons, so atom of calcium is neutral.  

Electron configuration of calcium atom: ₂₀Ca 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²; calcium has two valence electrons (4s²).  

In reactions it lose those two electrons ang form cation with positive charge 2+.

Atomic number is the number of protons, which is characteristic of a chemical element.

Beryllium, magnesium,calcium and strontium are alkaline earth metals. The elements have very similar properties.

Alkaline earth metals have in common an outer s- electron shell (two electrons).

liraira [26]3 years ago
5 0

<u>Valence electrons</u> have the greatest effect on the chemical properties of calcium

<h3>Further explanation</h3>

Electrons can move the shell up or down by releasing energy or absorbing energy

Excited electrons show higher electron transfer to the shell by absorbing energy

So it can be concluded that there are 2 conditions:

Ground state is the state of electrons filling skins with the lowest energy levels.

Excited state is the state of electrons which occupies a higher energy level

The state of excited electrons can be seen from the presence of electrons which do not fill the skin completely but fill the skin afterwards

Ca has atomic number 20 so the electron configuration is:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

This configuration can be said in Ground state conditions

Elemental properties can be determined by its valence electrons (electrons which fill electrons in the outer shell)

The valence electrons of an element indicate in what group and period the element is located in the periodic system so that its properties can be determined

The period of an element is determined from the valence shell (the biggest main quantum number (n) )

Groups of chemical elements are divided into two, namely:

Group A, occupying sub shell s and p

Group B, occupying sub shell d

If we look at valence electrons from Ca atoms then:

  • period = 4
  • group = 2A

So that the Ca Atom is located in the alkaline earth group, together with beryllium (Be), magnesium (Mg), strontium (Sr), barium (Ba), and radium (Ra)

So the  chemical properties of calcium :

  • - forming bases
  • - reactive
  • - strong reducing agent

<h3>Learn more   </h3>

element X  

brainly.com/question/2572495  

electrons and atomic orbitals  

brainly.com/question/1832385  

about subatomic particles statement  

brainly.com/question/3176193  

You might be interested in
A student increases the temperature of a 417cm³ balloon from 278k to 231k. Assuming constant pressure, what should the new volum
viva [34]
Charles law states that volume of gas is directly proportional to temperature at constant pressure 
V/T = k
where V - volume , T - temperature and k - constant
\frac{V1}{T1} =  \frac{V2}{T2}
where parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation 

in the question it states that the temperature has been increased from 278 K to 231 K but it should actually be temperature is decreased from 278 K to 308 K
substituting the values in the equation 
\frac{417cm^{3} }{278K} =  \frac{V}{308 K}
V = 462 cm³
the answer should be D. 462 cm³ 
3 0
2 years ago
Select all the correct answers.
andrey2020 [161]

The  properties which keep the water temperature from changing much are;

  • water's high specific heat capacity
  • the large mass of water
<h3>What is specific heat capacity?</h3>

The specific heat capacity is the property of a substance that shows how much its temperature changes when it is exposed to heat.

Thus, the  properties which keep the water temperature from changing much are;

  • water's high specific heat capacity
  • the large mass of water

Missing parts:

A red-hot iron nail is immersed in a large bucket of water. Although the nail cools down sufficiently to be held bare-handed, the temperature of the water barely increases. Which properties keep the water temperature from changing much?

A.) water's high heat conductivity

B.) water's high specific heat capacity

C.) the iron nail's high heat conductivity

D.) the large mass of water

E.) the iron nail's high specific heat capacity

Learn more about heat capacity:brainly.com/question/12244241

#SPJ1

3 0
1 year ago
An
Basile [38]

Answer:

The answer of this question is molecule

4 0
3 years ago
Chlorophenols impart unpleasant taste and odor to drinking water at concentrations as low as 5 mg/m3. They are formed when the c
trapecia [35]

Answer:

See explaination

Explanation:

Chlorine’s disinfection properties have helped improve the lives of billions of people around the world. Chlorine also is an essential chemical building block, used to make many products that contribute to public health and safety, advanced technology, nutrition, security and transportation.

Please kindly check attachment for the step by step solution of the given problem.

4 0
3 years ago
Isotopes of the same element will have a different number of neutrons, but the same number of protons. TRUE OR FALSE
Nikitich [7]

Answer:

TRUE

Explanation:

6 0
2 years ago
Other questions:
  • ¿Qué similitud existe entre un jugo natural de fruta y la neblina?
    10·1 answer
  • What products are formed when a hydrocarbon combusts?
    9·1 answer
  • Sound waves travel fastest through<br> A) air. <br> B) steel. <br> C) water. <br> D) a vacuum.
    13·2 answers
  • What is thr total of all the forces on an object .
    7·1 answer
  • On a shade-grown coffee plantation, smaller coffee plants grow in the shade of forest trees. The practice produces fewer coffee
    14·2 answers
  • When 2-methyl-2,5-pentanediol is treated with sulfuric acid, dehydration occurs and 2,2-dimethyltetrahydrofuran is formed. Sugge
    11·1 answer
  • A gas has a volume of 5.00 L at 20 degrees Celsius. What is the volume of gas at 150 degrees Celsius.
    14·1 answer
  • What is the mole fraction of NaCl in
    13·2 answers
  • How cold does it have to be for boiling water to freeze instantly
    11·1 answer
  • Xenon-135 is produced in a nuclear reactor by two primary methods. one is directly from fission, the other is from the decay of:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!