All categories

3 years ago

Which pair of atoms has the highest electronegativity difference? Na-F Ca-F H-F C-F F-F

Chemistry

2 answers:

neonofarm [45]3 years ago

5 0

Answer: Na-F has the highest electronegativity difference.

Explanation: Electronegativity is the measure of how strongle an atom holds the electrons. The highest electronegative atom is Fluorine.

Electronegativity of Sodium = 0.93

Electronegativity of Calcium = 1

Electronegativity of Hydrogen = 2.1

Electronegativity of Carbon = 2.55

Electronegativity of Fluorine = 3.98

Electronegativity difference in the following compounds:

Electronegativity difference in Na-F = 3.98 - 0.93 = 3.05

Electronegativity difference in Ca-F = 3.98 - 1 = 2.98

Electronegativity difference in H-F = 3.98 - 2.1 = 1.88

Electronegativity difference in C-F = 3.98 - 2.55 = 1.43

Electronegativity difference in F-F = 3.98 - 3.98 = 0

From the above calculations, it is visible that the highest electronegativity difference is present in Na-F.

From all the compounds, it is clearly seen that sodium can loose the electrons easily and is most electropositive and fluorine is the most electronegative element.

babunello [35]3 years ago

3 0

The answer is Na-F. The F has highest electronegativity among these elements. So we need to find the element with smallest electronegativity. And this element is Na.

You might be interested in

I just need help with these 2 questions I accidentally answered the first one

Anni [7]

Answer:

i think the pool

Explanation:

7 0

2 years ago

Why are metals alloyed?

Lady_Fox [76]

Because alloys have qualities that are preferable to pure metals, almost all metals are utilised as alloys—that is, mixes of several elements. Alloying is done for a variety of purposes, the most common of which are to increase strength, corrosion resistance, or cost savings.

5 0

2 years ago

PLEASE HELP ME I NEED HELP

Crazy boy [7]

Answer:

5 moles S x (36.02 g S/mole S) = 180.1 grams of S

Explanation:

The periodic table has mass units for every element that can be correlated with the number of atoms of that element. The relationship is known as Avogadro's Number. This number, 6.02x $10^{23}$ , is nicknamed the mole, which scientists found to be a lot more catchy, and easier to write than 6.02x $10^{23}$ . The mole is correlated to the atomic mass of that element. The atomic mass of sulfur, S, is 36.02 AMU, atomic mass units. But it can also be read as 36.02 grams/mole.

This means that 36.02 grams of S contains 1 mole (6.02x $10^{23}$ ) of S atoms.

This relationship holds for all the elements. Zinc, Zn, has an atomic mass of 65.38 AMU, so it has a "molar mass" of 65.38 grams/mole. ^5.38 grams of Zn contains 1 mole of Zn atoms.

And so on.

5.0 moles of Sulfur would therefore contain:

(5.0 moles S)*(36.02 grams/mole S) = 180.1 grams of S

Note how the units cancel to leaves just grams. The units are extremely helpful in mole calculations to insure the correct mathematical operation is done. To find the number of moles in 70 g of S, for example, we would write:

(70g S)/(36.02 grams S/mole S) = 1.94 moles of S. [Note how the units cancel to leave just moles]

4 0

2 years ago

Draw lewis formula and structural formula of hydrogen ion please and thank you

tresset_1 [31]

The Lewis formula refers to a diagram showing the distribution of electrones and in case of a molecule it also shows the bonds.

The structural formula on the other hand is a representation of the molecular structure that shows all the atoms that form the molecule, arranged in a three dimentional space,

In this case we have the hydrogen ion, which is the simpliest case we can have.

Hydrogen ion is the hydrogen atom possitively charged as it has lost his electron. Therefore the structural formula is simply the following:

The Lewis formula is also very simple as this ion has no electrons and has no bonding to other atoms:

4 0

1 year ago

Is it likely that an atom of Te would substitute for an atom of O in a solid compound? yes no indeterminate

PolarNik [594]

Answer:

The correct answer is no.

Explanation:

Tellurium is a chemical element denoted by Te and having atomic number 52. It is mildly toxic, brittle, silver-white, and rare metalloid. The element is chemically related to sulfur and selenium, all three of which are chalcogens.

Oxygen is a chemical element, that is, a substance, which comprises only one kind of atom. Its official chemical symbol is O and exhibits an atomic number 8, this signifies that an atom of oxygen possesses eight protons in its nucleus. In the given question, it is not likely that tellurium would replace for oxygen, as the two elements are highly unlike.

3 0

3 years ago