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4 years ago

How many valence electrons must two atoms share to form a single covalent bond? answers A.2 B.4 C.3 D.1

Chemistry

1 answer:

mrs_skeptik [129]4 years ago

4 0

Answer:

Explanation:

A single covalent bond is formed when two electrons are shared between the same two atoms, one electron from each atom.

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Regarding water molecules, adhesion is best described as * the attraction water molecules have to other water molecules the attr

Helen [10]

Answer:

the attraction water molecules have to other surfaces

Explanation:

Adhesion is defined as the attractive forces between unlike substances, e.g water moving up a capillary tube.

Adhesion is the tendency of dissimilar particles or surfaces to cling to one another(Wikipedia).

So, what we mean by adhesion in this context, is the attraction water molecules to other surfaces.

3 0

3 years ago

Which of the following is a correct Lewis structure?

ololo11 [35]

Answer:

The answer to your question is letter B

Explanation:

a. [: C≡C :] This option is not correct because Carbon only has 4 valence electrons and carbons in this structure have 5, this structure does not exist.

b. [: N≡N :] This option is correct because because Nitrogen has 5 valence electrons and this structure shows that number of electrons.

c. No right choice. This option is incorrect because letter B is correct.

8 0

3 years ago

Read 2 more answers

Minerals with the silicon-oxygen structure shown in Figure 2-1 are classified into what group?

egoroff_w [7]

B----------- oxide is the correct answer

6 0

3 years ago

A student made the Lewis dot diagram of a compound as shown. Mg is written with two dots shown on its top. Cl is written on the

blsea [12.9K]

Answer:

The dots were not properly located and arrows are not used in Lewis structures

Explanation:

If we intend to write a Lewis structure for a compound, that lewis structure must consist of only dots. These dots actually show the valence electrons on the outermost shell of the molecule.

We do not involve arrows when writing dot electron structures for compounds. The valence electrons of magnesium ought not to be written together because they are not a lone pair, rather they are two unpaired electrons. The use of an arrow suggests a coordinate covalent bond which is not the case here.

The correct lewis structure for MgCl2 is shown in the image attached to this answer.

7 0

4 years ago

What is percent by mass? What is it used for?

Kitty [74]

Explanation:

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3 0

3 years ago