Which element has the greatest electronegativity? fluorine chlorine bromine iodine

Answers

Answer 1

Answer:

Answer: Option (a) is the correct answer.

Explanation:

It is known that for non-metals, on moving down a group there will be decrease in electronegativity of elements.

Smaller is the size of a non-metal, more easily an electron will be attracted by its nucleus. Whereas larger is the size of element more is the number of electrons present in the atom.

Hence, more will be the number of shells and attraction between the nucleus and outermost electrons will decrease. As a result, an electron will not easily get attracted by a larger atom.

Thus we can conclude that fluorine is the element that has the greatest electronegativity.

Answer 2

Answer: Fluorine has the greatest electronegativity

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Is the compound CO ionic or covalent

Answers

If a compound is made of one metal and one non-metal it's bond will be ionic, whereas if a compound is made of two non-metals, it's bond will be covalent.

C - Non-Metal
O - Non-Metal

CO = Covalent.

Which statement about one atom of an element identifies the element?(1) The atom has 1 proton. (2) The atom has 2 neutrons.(3) The sum of the number of protons and neutrons in the atom is 3.(4) The difference between the number of neutrons and protons in the atom is 1.

Answers

the atom has one proton

A chemistry student is recording the electric charges of some atoms. Use the results in the chart to answer the following questions.Atom Electric Charge
Carbon −4
Nitrogen +5
Oxygen −2
Part A:
Write an equation to find the difference in electric charge between the Nitrogen atom and the Oxygen atom.

Part B:
Using the equation you wrote in Part A, what is the difference in electric charge between the two atoms?

Answers

Answer Can someone here please look at my questions and see if you can help

A farmer had an accident and spilled a chemical into his pond. Several days later, he notices many dead frogs around the pond. That summer, the number of gnats around the pond was higher than ever. This is becausea. the chemical is good for the gnats.
b. the frogs are a limiting factor for the gnats.
c. the gnats are a limiting factor for the frogs.
d. the chemical is a limiting factor for the gnats.

Answers

Answer:

The correct answer is option b.

Explanation:

A limiting factor or limiting reagent is a compound of reactant which gets used up first and effects the formation of product in a chemical reaction.

Around the pond frog would be feeding on gnat, and due to their presence population of gnats were in control .But due to accidental spilling of chemical in pond resulted in death of frogs. Which were actually responsible for less population of gnats around the pond but due to dead action of chemical on them (frogs) their population in pond declined due to which increase in population of gnats was observed.

On generalizing this fact:

Higher the population of frogs lower will be the population of gnats.
lower the population of frogs higher will be the population of gnats.

So, from this we can conclude that frogs are the limiting factors for the gnats as more the number of frogs lessor will be number of gnats.

b. the frogs are a limiting factor for the gnats
the frogs limit the reproduction of the gnats, and therefore with less frogs the gnat population can increase

The major argument of opponents of the 1919Treaty of Versailles was that the treaty would
require the United States to
(1) become involved in future international
conflicts
(2) pay for war damages
(3) adopt a policy of military alliances
(4) keep troops permanently in Europe

Answers

The Treaty of Versailles would require the United States to become involved in future international conflicts.

The Treaty of Versailles was signed to end World War I in 1919.
The treaty also became a peace treaty presented by the Allied (France, Britain and the United States).
The opponents of the Treaty of Versailles, like, Germany oppose America involvement in Europe.
They believed that America, being disconnected geographically by the ocean, has no right to interfere.
When the United States had entered the war, the Germans protested.

Therefore we can conclude that Germans oppose America involvement in future international conflicts.

Thus option 1. is the correct answer.

Learn more about "the Treaty of Versailles" here:

brainly.com/question/1800157

the answer is one i did this like a month ago

What is the limiting reactant if 4.0 g of Nh3 react with 8.0 g of oxygen?

Answers

Answer : The limiting reagent is $O_2$ .

Solution : Given,

Mass of $NH_3$ = 4.0 g

Mass of $O_2$ = 8.0 g

Molar mass of $NH_3$ = 17 g/mole

Molar mass of $O_2$ = 32 g/mole

First we have to calculate the moles of $NH_3$ and $O_2$ .

$\text{ Moles of }NH_3=\frac{\text{ Mass of }NH_3}{\text{ Molar mass of }NH_3}=(4.0g)/(17g/mole)=0.24moles$

$\text{ Moles of }O_2=\frac{\text{ Mass of }O_2}{\text{ Molar mass of }O_2}=(8.0g)/(32g/mole)=0.25moles$

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

$4NH_3+5O_2\rightarrow 4NO+6H_2O$

From the balanced reaction we conclude that

As, 5 mole of $O_2$ react with 4 mole of $NH_3$

So, 0.25 moles of $O_2$ react with $(0.25)/(5)* 4=0.20$ moles of $NH_3$

From this we conclude that, $NH_3$ is an excess reagent because the given moles are greater than the required moles and $O_2$ is a limiting reagent and it limits the formation of product.

Hence, the limiting reagent is $O_2$ .

NH3-The limiting reactant is the reactant that get completely used up in a reaction

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