What is the total number of electrons shared in a double covalent bond?(1) 1 (3) 3
(2) 2 (4) 4

Answers

Answer 1
Answer: The correct answer is option 4. In a double covalent bond, two pairs of electrons are bonded or there is a total of four electrons being shared in a bond. For example, we have oxygen. Two atoms of oxygen share two pairs of electrons to have a stable structure.

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What term is used to describe a perfect radiator and absorber of electromagnetic radiation?

Answers

Blackbody is the term used to describe a perfect radiator and absorber of electromagnetic radiation. 

Given the reaction below, which is the reduced substance?Mg + Cl2 mc006-1.jpg Mg2+ + 2Clmc006-2.jpg

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In the reaction:
Mg + Cl2 --> Mg2+ + 2Cl-

The reduced substance is the substance that the gained electron/s.
Looking at the substances:
Mg has a neutral charge, after the reaction, it gained a charge of 2+. This means, it lost 2 electrons.
Cl2 has a neutral charge, after the reaction, it gained a charge of -1. This means it gained 2 electrons.

Therefore, the reduced substance is Cl2.

the reduced substance is Cl2.

The average atomic mass of oxygen is 15.9994 amu. The atomic masses of its three isotopes are as follows: O-16: 15.995 amu; O-17: 16.999 amu; O-18: 17.999 amu Which isotope is most likely to have the greatest abundance in nature?

Answers

Answer:

O-16 isotope is most likely to have the greatest abundance in nature.

Explanation:

Atomic mass of an isotopes of oxygen elements:

  • O-16: 15.995 amu
  • O-17: 16.999 amu
  • O-18: 17.999 amu

Average atomic mass of an oxygen atom = 15.994 amu

Isotope with the value of atomic mass closest to the average atomic mass of the oxygen atom will have the greatest abundance in nature. As it will be found in much more greater extent in nature.

Where as isotope which is least close to the average atomic mass will have less abundance in nature.

O-16 isotope is most likely to have the greatest abundance in nature.

15.995 amu ≈ 15.994 amu

Increasing the intensity and duration of an exercise program too quickly can lead to injury.

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assuming you want a true or false answer, this is true. 

The Answer Is True :) Took The Test:)

Ionic crystals are extremely malleable because they contain a positively charged metal ion,TRUE

FALSE

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The statement “Ionic crystals are extremely malleable because they contain a positively charged metal ion” is false. Ionic crystals are composed of positive and negative ions that are combined so that the numbers of positive and negative charges are equal.

A new scam on the Internet involves people selling samples of sodium that they collected from a secret river in the mountains. Write a short statement to explain why this is a scam.

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Sodium is a very highly reactive metal that does not occur in free state in nature.

Sodium is a group 1 element. It has a very negative electrode potential which implies that it is highly reactive. Being a highly reactive element, sodium can not occur in free state in nature. It always occurs in combined form as compounds.

Hence, it is impossible to pick up sodium from any secret river in the mountains. Sodium metal is highly reactive hence it has to be stored under paraffin oil. The whole set up is indeed a scam.

Learn more: brainly.com/question/2673886

Answer:

Explanation:

The reason this is a scam is because they are selling sodium and to sell this product you must have a licence to do so. And secondly, you cant tell the reader that it is from a secret river and sell them a product that reacts when it touches water.