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wariber [46]
3 years ago
10

Consider the Lewis structure for the polyatomic oxyanion shown here, where X is an element from the third period (Na−Ar). By cha

nging the overall charge, n, from 1- to 2- to 3- we get three different polyatomic ions.
Element X is surrounded by 4 oxygen atoms bonded to it with full octets.


A)For each of these ions identify the central atom, X. Arrange your answers in order increasing n.

B)For each of these ions determine the formal charge of the central atom, X. Arrange your answers in order increasing n.


I really have no idea how to solve this. Any help would be greatly appreciated!
Chemistry
1 answer:
katovenus [111]3 years ago
4 0

Hey there!

A ) PO₄³⁻

The element exhibits resonance (4 times) as there is a double bondwith 1 oxygen and a single with the other 3 oxygen. This switchesin each resonance structure. (I know its weird b/c  I leaves Phosphorus with 10 electrons surrounding it)



b) SO₄²⁻


Sulfur is the central atom  ,double bond 2 oxygens so that they can only have 4 valence electrons ( the little dots around the oxygen )  ,single bond 2 oxygens ( So that they have 6 valence electrons )



Formal charges are 0 for the two double bonded oxygens [ 6-6 = 0 ]and 0 for the sulfur [ 6-6=0 ]


But the oxygens are -1 [ 6-7 = -1 ]


Since there are two of them, there is a negative charge of -2



Bracket the whole structure and on the top right of the outside ofthe brackets write 2- and include a - (negative sign) next to eachof the single bonded oxygens



Don't forget there are resonance structures. The double bonds canbe placed around any of the oxygens



Hope that helps!

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An element with the valence electron configuration 4s1 would form a monatomic ion with a charge of_______ . In order to form thi
qwelly [4]

Answer:

+1, lose, 1, 4s, 4s and 3d

Explanation:

<em>An element with the valence electron configuration 4s¹ would form a monatomic ion with a charge of </em><em>+1</em><em>. In order to form this ion, the element will </em><em>lose</em><em> </em><em>1 </em><em>electron from the </em><em>4s </em><em>subshell.</em>

The corresponding oxidation reaction is:

K ⇒ K¹⁺ + 1 e⁻

[Ar] 4s¹ ⇒ [Ar]

<em>If an element with the valence configuration 4s² 3d⁶ loses 3 electrons, these electrons would be removed from the </em><em>4s and 3d</em><em> subshell(s).</em>

The corresponding oxidation reaction is:

Fe ⇒ Fe³⁺ + 3 e⁻

[Ar] 4s² 3d⁶ ⇒ [Ar] 4s⁰ 3d⁵

3 0
3 years ago
Intermolecular forces are the interactions between molecules and are generally weaker than bonds within molecules. Which molecul
telo118 [61]

Answer:

Molecules that will have dipole-dipole forces with like molecules include the water (H2O) molecule. Another example is the Hydrogen Chloride (HCl) molecule.

Explanation:

Intermolecular forces are forces of attraction or repulsion that exist between particles (ions, atoms, or molecules) that are close/in nearby proximity to each other. Usually, intermolecular forces are not as strong as intramolecular forces which create covalent or ionic bonds between the atoms that exist within molecules. Dipole-dipole interactions occur whenever the partial charges that exist within one molecule are attracted to the opposite partial charges that exist within another different molecule that is nearby and similar in composition: the positive end/charges of one molecule are attracted to the negative end/charges of another similar molecule.

An example of molecules that exhibit dipole-dipole interaction is the water (H2O) molecule. Another molecule which exhibits dipole–dipole interaction is the Hydrogen Chloride (HCl) molecule, whereby the positive end of one HCl molecule usually attracts the negative end of another HCl molecule.

6 0
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A human zygote has 46 chromosomes. This number of chromosomes represents what in a human cell?
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If the sperm carries a Y chromosome, it will result in a male. During fertilization, gametes from the sperm combine with gametes from the egg to form a zygote. The zygote contains two sets of 23 chromosomes, for the required 46.
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draw two lewis structures for a compound with the formula c4h10 . no atom bears a charge, and all carbon atoms have complete oct
I am Lyosha [343]

The number of sigma bonds = 5, and number of pi bonds = 3 in the given compound. Shown in attachment are the two Lewis structures of the compound with molecular formula C4H10. The two structures are the isomers of each other.

Butane is an alkane represented by C4H10. All the bonds in this situation are single bonds because this substance is an alkane. Two shared electrons are present in every bond.

Each carbon atom requires 8 electrons around it in order to follow the Octet Rule. The octet rule was completed by the hydrogen bonds, eliminating the need for the electron dots.

Straight-chained butane is the first structure. The y-chained isobutane is the second structure.

To know more about Lewis theory  visit : brainly.com/question/1179291

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8 0
2 years ago
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Hoochie [10]
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