All categories

3 years ago

Which of the elements below has the greatest electronegativity? He F Fr Rn

Chemistry

2 answers:

Studentka2010 [4]3 years ago

8 0

Answer: The element having greatest electronegativity is Fluorine.

Explanation:

Electronegativity is defined as the tendency of an element to attract electrons towards itself. More strongly an element attracts electrons, more will be its electronegativity and vice-versa.

Electronegativity of Group 18 elements is usually 0 except Xenon which has an electronegativity value of 2.6. These elements have filled valence shell and hence they do not attract electrons towards itself and hence, has no electronegativity.

In a periodic table, electronegativity decreases down the group and increases from left to right in a period.

Fluorine is present at Period 2, Group 17 of the periodic table.

Francium is present at Period 7, Group 1 of the periodic table.

Hence, fluorine will have the greatest value of electronegativity among the given elements.

Law Incorporation [45]3 years ago

3 0

F.
it's the greatest electron "hogger"
as you get closet to it, the stronger the electro negitivity.
He is halogen : they don't like to gain electrons. they are already stable.

Fr and Rn
are metals as far is I can remember. they would prefer losing electrons.

You might be interested in

1. element with three occupied energy levels and one valence electron

vfiekz [6]

Answer:

Potassium (K) = (2,8,8,1)

This is the element that has three(3) filled energy level and one valence electron

3 0

2 years ago

A graduated cylinder contains 20.8 mL of water. What is the new water level, in milliliters, after 35.2 g of silver metal is sub

stepladder [879]

Answer: The new water level of the cylinder is 24.16 mL

Explanation:

To calculate the volume of water displaced by silver, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

Density of silver = 10.49 g/mL

Mass of silver = 35.2 g

Putting values in above equation, we get:

$10.49g/mL=\frac{35.2g}{\text{Volume of silver}}\\\\\text{Volume of silver}=\frac{35.2g}{10.49g/mL}=3.36mL$

We are given:

Volume of graduated cylinder = 20.8 mL

New water level of the cylinder = Volume of graduated cylinder + Volume of water displaced by silver

New water level of the cylinder = (20.8 + 3.36) mL = 24.16 mL

Hence, the new water level of the cylinder is 24.16 mL

5 0

2 years ago

A solution is made by adding 29.1 mL of concentrated perchloric acid ( 70.5 wt% , density 1.67 g/mL ) to some water in a volumet

Lera25 [3.4K]

Answer:

The concentration of the solution is 1.364 molar.

Explanation:

Volume of perchloric acid = 29.1 mL

Mass of the solution = m

Density of the solution = 1.67 g/mL

$m=1.67 g/mL\times 29.1 mL=48.597 g$

Percentage of perchloric acid in 48.597 solution :70.5 %

Mass of perchloric acid in 48.597 solution :

= $\frac{70.5}{100}\times 48.597 = 34.261 g$

Moles of perchloric acid = $\frac{34.261 g}{100.46 g/mol}=0.3410 mol$

In 29.1 mL of solution water is added and volume was changed to 250 mL.

So, volume of the final solution = 250 mL = 0.250 L (1 mL = 0.001 L)

$Molarity=\frac{Moles}{Volume (L)}$

$=\frac{0.3410 mol}{0.250 L}=1.364 M$

The concentration of the solution is 1.364 molar.

6 0

2 years ago

Consider only the experiment you conducted with 0.5 g. of lactose.

rjkz [21]

Answer is: the pH value(level) is the independent variable.

Missing question: We conducted an experiment where we added 0.5 g of lactose to 5 different test tubes all containing 5 different pH levels. What is the independent variable?
In this experiment pH level changes, so results depend on different pH values.
Mass of lactose is same during experiment,so the number of molecules of product formed per minute is the dependent variable.

8 0

3 years ago

In general, as you move from right to left across a period, the number of valence electrons

goblinko [34]

As you move from left to right across a period,the number of valence electrons-increases.

4 0

3 years ago

Read 2 more answers