Which of the following ions has a smaller size? Option 1: O2- Option 2: F- Option 3: They have the same size. Option 4: None of the above.

Answers

Answer 1

Answer:

The fluoride ion (F-) is smaller in size than the oxide ion (O2-).

The ion with a smaller size is F- (fluoride ion) compared to O2- (oxide ion).

The size of an ion depends on the number of protons and electrons it has. Fluoride ion has one less electron than the oxide ion, making it smaller in size.

This trend can be explained by the concept of effective nuclear charge, where the positive charge of the nucleus is partially shielded by other electrons in the atom. As the atomic number increases from oxygen to fluorine, the increase in nuclear charge outweighs the additional electron-electron repulsions, resulting in a smaller size for fluoride ion.

Learn more about Ion size here:

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A hydrogen ion, H+, in aqueous solution may also be written as(1) H2O (3) H3O+(2) H2O2 (4) OH–

Which best describes the effect of J. J. Thomson’s discovery

Answers

Well one effect of J. J. Thomson's discovery is that he actually got a Nobel Prize. I don't really know what your choices are, so it's kinda difficult to know what you need.

Large cities often have a visible haze hanging in the air high above them. What most likely causes this haze? a. many women's aerosol hairsprays

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Haze is caused by particulate matter from incomplete combustion of car, truck, bus, burning of gasoline and diesel. This could also be caused by the buning of wood, coal, and heating oils from industry, electical generation plants that do not collect some of the pollutants at the smoke stack or exhaust points.

What is the Roman numeral that should be used in the following: silver (_______) sulfide? A. No Roman numeral should be used here. B. I C. III D. II

Answers

Answer: The correct answer is Option B.

Explanation: The compound given to us is $Ag_2S$ . To write the IUPAC name for this compound, we need to follow some rules:

1. First write the name of the cation with its oxidation state in roman numbers.

2. Then write the name of the anion which may be a polyatomic ion or a non-metal.

3. The anion is used with a suffix '-ide'. Example: For chlorine, the anion would be named as chloride, for sulfur, the anion would be sulfide.

For the given compound, 2 silver atoms are needed to neutralize the charge on 1 sulfur atom.

Hence, the oxidation number of silver atom is '1'. So, the IUPAC name for the compound will be silver (I) sulfide.

Therefore, the correct option is B.

The answer is I

The correct way of writing this would be silver(I) sulfide, but silver sulfide without the (I) is also OK because it isn't always writte, nor is it necessary to write the (I).

Compared to a phosphorus atom, a P3- ion has

Answers

Answer:

Three more electrons

Explanation:

Compared to a phosphorous atom (P) the P3- ion has gained 3 electrons resulting in the trivalent negative charge. P3- is a reduced state of P and to name some properties:

It has a bigger atomic radius due to the extra electrons and the weaker attraction the protons have to them.
It can react as a base (taking electrons)

Compared to a phosphorus atom, a P3- ion has more electrons and a larger radius. With a negative charge means there are more electron than protons, this increases the radius because positive charge is trying to hold a larger negative charge. Hope this helps

Chemical bondsa. are always ionic.
b. combine compounds to form elements.
c. are always covalent.
d. hold atoms together to form compounds.

. A pyramid of numbers differs from an ecological pyramid because it
a. shows the amount of energy within each trophic level.
b. displays the number of organisms at each trophic level.
c. is organized by trophic levels, while an ecological pyramid isn't.
d. attempts to describe a food chain or food web.

Answers

Chemical bonds hold atoms together to form compounds through the sharing of electrons or the transferring of electrons.
Bio is not my strongest subject, but I am pretty sure that a pyramid of numbers differs from an ecological pyramid because it displays the number of organisms at each trophic level

D. displays the number of organisms at each trophic level.

Hope I was helpful :)

Which statement describes an alternate theory of acids and bases?(1) Acids and bases are both H+ acceptors.
(2) Acids and bases are both H+ donors.
(3) Acids are H+ acceptors, and bases are H+ donors.
(4) Acids are H+ donors, and bases are H+ acceptors.

Answers

Answer: Option (4) is the correct answer.

Explanation:

According to Bronsted and Lowry, acids are the species which can donate hydrogen or $H^(+)$ ions.

Whereas bases are the species which can accept hydrogen or $H^(+)$ ions.

Thus, we can conclude that the statement acids are $H^(+)$ donors, and bases are $H^(+)$ acceptors describes an alternate theory of acids and bases.

The answer is (4) Acids are H+ donors, and bases are H+ acceptors. This constitutes the Bronsted-Lowry theory of acids and bases.

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