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
marusya05 [52]
3 years ago
7

What is the Free valence electrons and how can i count it?

Chemistry
2 answers:
Leto [7]3 years ago
8 0

Answer:

An atom can have 1 or more shells the electrons present in the last shell or valence shell are called free electrons or valence electrons

<em><u>How</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>count</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>free</u></em><em><u> </u></em><em><u>electrons</u></em><em><u> </u></em><em><u>or</u></em><em><u> </u></em><em><u>valence</u></em><em><u> </u></em><em><u>electrons</u></em><em><u>:</u></em>

<em>Step</em><em> </em><em>1</em><em>:</em><em> </em>Write the electronic configuration of the atom

<em>Step</em><em> </em><em>2</em><em>:</em><em> </em>The number which in the last is the number of free electrons

<em>For</em><em> </em><em>example</em><em>:</em>

<em>1</em><em>)</em><em> </em><em>Sodium</em>

Its electronic configuration is 2,8,1

The last number is 1 so Sodium has 1 valence electron

<em>2</em><em>)</em><em> </em><em>Chlorine</em>

Its electronic configuration is 2,8,7

The last number is 7 so it has 7 valence electrons

Ivan3 years ago
7 0

Answer:

Hey Mate, here is ur answer

Explanation:

Valence electrons are electrons that are loosely bound to an atom. Free electrons are completely unbound to any atom. Valence electrons are responsible for the chemical reactions and chemical bonding of atoms. Free electrons take part in heat and electricity conduction of a lattice structure.

To find valence electrons using a period table, first see if your atom is a transitional metal, which are the elements in the middle rectangle of the table. If the atom is outside this block, locate its group number along the top of the table. The ones digit in the group number is the number of valence electrons.

You might be interested in
El desplazamiento de la Tierra alrededor del Sol se conoce como
Lapatulllka [165]
Le déplacement est défini comme la distance entre la position initiale et finale du corps. Après un tour complet, la terre revient à sa position initiale. La distance entre la position initiale et la position finale est donc nulle.
Le déplacement de la terre est donc nul. Par conséquent, la déclaration donnée est vraie.
3 0
3 years ago
Read 2 more answers
I AMMMM GIVING 45 POINTSSSS PLSSS HELPPPPPPPP
Westkost [7]

Answer:

mNaNO3 =765g

Explanation:

First, we write the balanced chemical equation representing the chemical reaction that happened between aluminum nitrate and sodium chloride.

Balanced chemical equation:

AL(NO3)3+3NaCl ⟶ 3 NaNO3+AlCl3

According to the equation, each mole of aluminum nitrate requires three moles of sodium chloride. Thus, the required number of moles of sodium chloride is

4 Mol ⋅ 3 = 12mol

Based on the data provided in the table, there were 9 moles of sodium chloride used in the reaction, which was not enough for the entirety of aluminum nitrate to react. So, sodium chloride must have been the limiting reactant.

Therefore, we use the number of moles (n) of sodium chloride to calculate the number of moles of sodium nitrate, which has a 1:1 ratio with sodium chloride.

Number of moles sodium nitrate:

nNaNO3=nNaCl

nNaNO3 = 9 mol

We can also calculate the mass (m) of sodium nitrate that was produced by multiplying its number of moles by its molar mass (MM), 85.00g/mol.

Mass of sodium nitrate produced:

mNaNO3 = nNaNO3 ⋅ MMNaNO3

mNaNO3 = 9 mol ⋅ 85.00 g/mol

mNaNO3 =765g

8 0
3 years ago
What is the wavelength of electromagnetic radiation with a frequency of 9.23 × 107 Hz?
Igoryamba

Answer:

The wavelength of the given electromagnetic radiation is 3.25 m.

Explanation:

We know that,

Frequency (f) = c / λ;

where,

c - speed of light = 3\times10^{8} m/s

λ - wavelength of the radiation.

Given,

f = 9.23 \times10^{7}  Hz,

From the above formula,

λ =\frac{c}{f}

λ = \frac{3\times10^{8} }{9.23\times10^{7} }

λ = 3.25m;

Therefore,

Wavelength of the given radiation = 3.25 m

3 0
4 years ago
What product or ratio of properties remains constant (PxT, TxV, P/V, V/T, etx)?When you have decided, label the "constant?" colu
Naddika [18.5K]

Answer:

In this phenomenon we talk about ideal gases, that is why in these equations the constant is the number of moles and the constant R, which has a value of 0.082

Explanation:

The complete equation would have to be P x ​​V = n x R x T

where n is the number of moles, and if it is not clarified it is because they remain constant, as the question was worded.

On the other hand, the symbol R refers to the ideal gas constant, which declares that a gas behaves like an ideal gas during the reaction, and its value will always be the same, which is why it is called a constant. The value of R = 0.082.

The ideal gas model assumes that the volume of the molecule is zero and the particles do not interact with each other. Most real gases approach this constant within two significant figures, under pressure and temperature conditions sufficiently far from the liquefaction or sublimation point. The real gas equations of state are, in many cases, corrections to the previous one.

The universal constant of ideal gases is not a fundamental constant (therefore, choosing the temperature scale appropriately and using the number of particles, we can have R = 1, although this system of units is not very practical)

3 0
3 years ago
What mass of YCL3 forms when 10.0 grams of each reactant are combined?
Triss [41]

The mass of YCl_3 that would be formed will be 18.22 grams

<h3>Stoichiometric calculations</h3>

Let us first look at the balanced equation of the reaction:

2Y + 3Cl_2 --- > 2YCl_3

The mole ratio of Y to Cl_2 is 2:3.

Mole of 10.0 grams of Y = 10/88.9 = 0.11 moles

Mole of 10.0 grams  Cl_2 = 10/71 = 0.14 moles

3/2 of 0.11 = 0.165. Thus,  Cl_2 is limiting in availability.

Mole ratio of  Cl_2 and YCl_3 = 3:2

Equivalent mole of YCl_3 = 2/3 x 0.14 = 0.093 moles.

Mass of 0.093 moles YCl_3 =0.093 x 195.26 = 18.22 grams

More on stoichiometric calculations can be found here: brainly.com/question/27287858

#SPJ1

5 0
2 years ago
Other questions:
  • In the United States, where can volcanoes like those at B be found
    6·2 answers
  • Write balanced complete ionic equation for HCl(aq)+LiOH(aq)→H2O(l)+LiCl(aq)
    11·1 answer
  • You have 452 mL of water. What is this in liters?
    13·2 answers
  • Please help I will mark Brainly. !!
    6·2 answers
  • What are the 5 functions of the skelatal system
    6·1 answer
  • 1a.calculate the relative formula mass of magnesium oxide when the relative atomic masses are O=16 Mg=24
    12·1 answer
  • What is used to measure heat?
    10·1 answer
  • how much alum product would be lost to the crystallization solution if you had 42.5 ml of solution after filtration and the solu
    9·1 answer
  • Which type of water flow would be the best design for sending a consistent flow of water past the turbines?
    5·2 answers
  • If air was not allowed to stream
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!