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3 years ago

Which statement applies to electronegativity?

Chemistry

2 answers:

dolphi86 [110]3 years ago

8 0

Answer: Electronegativity increases across a period.

Explanation:

Electronegativity is defined as ability of an atom to attract shared pair of electrons in a bond toward itself.

Electronegativity increases across the period because when we move across the period from left to right numbers of protons and electrons are increased. By increase in number of protons ,nuclear charge also increases due to which electrons present in an atom are strongly attracted towards the nucleus. And due to presence of strong nuclear charge shared pair of electrons in a bond are also attracted towards nucleus of an electronegative atom.

EastWind [94]3 years ago

6 0

I believe the answer would be A. Electronegativity increases across a period.

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The coordination compound Co3[Cr(CN)6]2 contains Co2+ cations and a complex anion. What is the likely oxidation state for Cr in

otez555 [7]

Answer:

-3

Explanation:

The oxidation state or oxidation number of an atom is the total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom.

The complex anion here is [Cr(CN)6]3-.

Now, as the oxidation state of CN or cyanide ligand is -1, and if we suppose the oxidation state of Cr to be 'x', then; x - 6 = -3 (overall charge on the anion),

so x= +3. Hence the oxidation state of Chromium in this complex hexacyanochromium (III) anion comes out to be -3.

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2 years ago

I don’t understand how to do this

djverab [1.8K]

Carbon dioxide is a carbon atom and two oxygen atoms, therefore CO2

For the others, they are hydrocarbons.
The first part of the name is determined by how many carbon atoms there are. The second part, is by the type. Alcohol, Alkane, Alkene, alkynes, acid, esters, amides.

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3 years ago

Enter the maximum number of electrons in each type of sublevel (s, p, d, and f, respectively)

Ksivusya [100]

The maximum number of electrons:
- s sublevel: 2 electrons,
- p sublevel: 6 electrons,
- d sublevel: 10 electrons,
- f sublevel : 14 electrons.

7 0

2 years ago

How many moles of H,O must be decomposed to form 200 moles of H,?<br> 24,0 2H +0,

son4ous [18]

Answer:

300

Explanation:

at least 300 molecules

8 0

2 years ago

A. Identify the structure drawn below.

nadya68 [22]

Answer:

Hexane

Explanation:

You have a carbon structure with only single bonds. This means that the name will end in -ane.

There are 6 carbon atoms. This means that the name will begin with hex-.

The structure is hexane.

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3 years ago