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2 years ago

When an atom of calcium (Ca) forms an ion by losing two electrons, what is the ion’s type and charge?

Chemistry

2 answers:

Svetllana [295]2 years ago

8 0

Answer: it would be cation, 2+

Explanation: electrons are negatively charged by 1. So if you get rid of 2 electrons it would be positive and cation is used to represent positive ions.

inysia [295]2 years ago

6 0

The electrical charge of the calcium ion is +2.

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The symbol of the eyes of symbol of shayambhunath stupa

Tju [1.3M]

Explanation:

The symbol of the eyes of syambhunath stupa refers to the eyes of gautam buddha also known as the eyes of wisdom. These eyes are prevalent throughout the country and have become a symbol of peace.

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2 years ago

dentify the oxidation state of Cl in Cl 2 O 7 . +2 Identify the oxidation state of Cl in AlCl − 4 . +1 Identify the oxidation st

konstantin123 [22]

Answer:

1. +7

2. -1

3. +3

4. +5

Explanation:

1. Identify the oxidation state of Cl in Cl₂O₇ .

Cl₂O₇ is a neutral compound.

In a neutral compound the oxidation states add up 0.

The oxidation state of oxygen in all the binary compounds, except the peroxides (where two oxygen atoms are bonded together and with other elements) is -2.

Since there are 7 atoms of O, the total oxidation number from it is (-2) × 7 = -14.

Then, the oxidation number from the Cl atoms must add up +14 (because the compound is neutral).

Since there are two atoms of Cl each one must contribute with +14/2 = +7 to the oxidation number.

That is the oxidation state of Cl in the compound. The answer is +7.

2 Identify the oxidation state of Cl in AlCl ₄⁻ (the formula was corrected)

The most common oxidation state of Al is +3.

Since the net charge of the ion is -1, the oxidation number of the other atom (call it x) must be such that four times it and +3 add up -1:

4x + 3 = - 1

4x = -1 - 3

4x = - 4

x = - 1

In conclusion, the oxidation state of Cl in the ion is -1

3. Identify the oxidation state of Cl in Ba (ClO₂)₂ .

This is a neutral compound. Thus the overall oxidation number is 0.

The oxidation state of Barium, Ba, such as of the other members of the group 2, alkaline earth metals, is +2.

The oxydation state of oxygen, O, in ternary compounds is -2

Thus, calling x the oxidation state of Cl and taking in account the number of atoms in the compound:

+2 + 2x + 4(-2) = 0

2x + 2 - 8 = 0

2x = 6

x = +3

Therefore, the oxidation state of Cl in this compound is +3

4. Identify the oxidation state of Cl in ClF₄⁺

Fluor has oxidation state -1. Since there are four atoms, it contributes with 4 × (-1) = - 4

The overall charge of the ion is +1.

Thus, the oxidation state of Cl, x, is:

x - 4 = 1

x = 1 + 4

x = +5

Hence, the oxidation state of Cl in this ion is +5.

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2 years ago

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Currently proven global reserves are expected to be largely exhausted within the next 50 years. Uranium-238 A Coal B Natural gas

Komok [63]

Answer:

Option (D)

Explanation:

Oil (crude and petroleum) is one of the major resources on earth in which the economy of a country is largely dependent on. These are non-renewable resources, which take thousands to million years of years in order to form.

It is highly essential. Every day, a large quantity of oil is being consumed. According to the researches done in the year 2015, it has been observed that the average global consumption of oil was 95 million barrels each day.

It has a high demand, and so it is being regularly used, and it has also been predicted that the present global oil reserves would be highly exhausted within the next 50 years.

Thus, the correct answer is option (D).

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3 years ago

Choose the correct word that describes the description. If you add too much sugar to the water, some of the crystals will sit on

Triss [41]

Answer:

saturated

Explanation:

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2 years ago

Which of the following is not a organic compound, a -corn oil b -b r o m i n e c -m e t h a n e d- protein

Flura [38]

A corn oil. Because oil is treated with a solvent. After that it is refined which gets rid of free fatty acids. Finally, it is sent through steam distillation to get rid of volatile organic compounds.

6 0

3 years ago

Read 2 more answers