Highlight the basic points in Lewis and Langmuir theory of electrovalency

Answers

Answer 1

Answer: The correct answer for the question that is being presented above is this one: "Electrovalency is characterized with the transferring of one or more electrons from one atom to another together with the formation of ions and as well as the number of positive and negative charges.

The Lewis and Langmuir theory of electrovalency (and as well as Kossel's) is dealing with Ionic bonds.

Lewis: electron-pair sharing, octet rule, Lewis Symbols or StructureLangmuir: introduced term "covalent" bond, and popularized Lewis's ideas

The Lewis-Langmuir electron-pair or covalent bond is referred as the homopolar bond, where the complete transfer of electrons give rise to ionic, or electrovalent bond (1) through attraction of opposite charges.

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Chromium, calcium, and potassium are near each other on the periodic table and have some common characteristics but differ in chemical reactivity. Which lists these metals in order from most reactive to least reactive?calcium, chromium, potassiumchromium, calcium, potassiumpotassium, calcium, chromiumpotassium, chromium, calcium

Based on the equation below, which of the following statements best describes what should be observed as the reaction takes place?Zn(s) + 2HCl(aq) = ZnCl2(aq) + H2(g)

Select one or more:
a. Chlorine forming a solid precipitate
b. Bubbles forming from hydrogen gas production
c. Solid zinc dissolving
d. Bubbles forming from chlorine gas production

Answers

The answer is. C, solid zinc dissolving.

What are the two categories of observations? a. qualitative and quantitative b. direct and indirect c. sensory and derived d. measured and deduced

Answers

Three main approaches are available for observational research: controlled observations, naturalistic observations, and participant observations. The two categories of observation are qualitative and quantitative. The correct option is A.

The observation approach entails watching, either manually or mechanically, what people actually do or what happens when they buy or consume something. Information is gathered by watching processes in action. Observations might be either qualitative or quantitative. Scientists make both qualitative and quantitative observations to acquire knowledge.

Observations that describe something's "qualities" are referred to as qualitative observations. These wouldn't involve counting or measuring and would instead contain qualities like texture, color, and shape. Utilizing standard scales to count or measure is a requirement for quantitative observations.

Thus the correct option is A.

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The correct answer is:

qualitative and quantitative.

Explanation:

Observation is the rapid retrieval of information from a first source. In living beings, observation contracts the senses. In science, observation can also include the recording of data via the use of scientific tools. Qualitative observation is a personal process of collecting data or knowledge while quantitative observation is an objective process of accumulating data or information.

Please help 30 points and brainlyist!!!! All of the following are isotopes of hydrogen, except: A. 1/0 H
B. 1/1 H
C. 0/1 H
D. 2/1 H

Answers

My dear friend ✌ ✌

The isotopes of the hydrogen atom are-:

▶1 , 2 and 3

So,
According to your options,

➡Only C is wrong.

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A 3.0 M HCl(aq) solution contains a total of(1) 3.0 grams of HCl per liter of water
(2) 3.0 grams of HCl per mole of solution
(3) 3.0 moles of HCl per liter of solution
(4) 3.0 moles of HCl per mole of water

Answers

Answer : The correct option is, (3) 3.0 moles of HCl per liter of solution

Explanation :

Molarity : It is defined as the number of moles of solute present in one liter of the solution. The S.I unit of molarity is mole per liter.

It is represented as,

$Molarity=\frac{\text{Moles of solute}}{V_(solution)(L)}$

where,

V = volume of solution in liter

As we are given 3.0 M HCl(aq) solution this means that 3.0 moles of HCl present in one liter of solution.

Hence, a 3.0 M HCl(aq) solution contains a total of 3.0 moles of HCl per liter of solution.

Molarity = number of moles / volume in liters solution

Answer (3)

hope this helps!

Which of these reactions can be classified as double replacement reactions?A) Zn + 2HCl → ZnCl2 + H2

B) 2NaCl + F2 → 2NaF + Cl2

C) 2AlBr3 + 3K2SO4 → 6KBr + Al2(SO4)3

D) 2K + MgBr2 → 2KBr + Mg

Answers

C is the answer. Reasons being that, two elements from both side of the reactant switches side to form two new compounds. On the other hand, A , B and D involves one element displacing the other to produce a new compound.

Answer:

The correct answer is option C.

Explanation:

Double displacement reaction is defined as the reaction in which exchange of ions takes place to give a product.

$AB+CD\rightarrow CB+AD$

Single displacement reaction is defined as the reaction in which more reactive element displaces a less reactive element from its chemical reaction.

$AB+C\rightarrow CB+A$

From all the given options the reaction which is classified as Double displacement reaction is :

$2AlBr_3 + 3K_2SO_4\rightarrow 6KBr + Al_2(SO_4)_3$

Where as other reactions are the examples of Single displacement reaction.

Which compound has the strongest hydrogen bonding between its molecules? 1. HBr 2. HF 3. HCl 4. HI

Answers

You can compare the strength of the hydrogen bonding by comparing the electronegativities of the other elements. All the four elements, Br, F, Cl and I belong to the same group in the periodic table: group 17 named halogens. Then the kind of bonding they form is similar: polar covalent. You must know the trend of the electronegativities in the periodic table. Electronegativity decrease when you down across a group. Then the electronegativity of F is the higher of the group (indeed, it is the highest of all the 118 elements) . The higher the electronegativity the stronger the attraction that the halogen attracts the electrons and the stronger the hydorgen bonding. Then, the conclusion is that HF has the strongest hydrogen bonding.

The correct answer is HF

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