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When two carbon atoms are joined by a double bond, how many electron pairs are shared between the two carbons

NikAS [45]

Answer:

Two (2) electron pairs

Explanation:

The sharing of electron pairs by atoms forms a type of bond called COVALENT bond. Atoms that form covalent bonding (share electrons) do so in order to fill their outermost electron shells, hence, gain chemical stability.

However, when two atoms like carbon share TWO PAIRS of electrons with each other, a DOUBLE BOND is formed. An example is the double bond formed in Ethylene (2HC=CH2). A total of four valence electrons (a pair from each carbon) are shared between the two carbon atoms.

6 0

3 years ago

Yes carbohydrates have both monomers and polymers. Monomers of carbohydrates are monosaccharides (mono- one; saccharide- sugar)

GenaCL600 [577]

Answer:

Ok. so what's the question .-.

Explanation:

4 0

3 years ago

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How does increasing temperature increase the number of reactions

Nitella [24]

Answer:

A

Explanation:

the increase in the temperature let's the particles to collide more so it increases the rate of reaction.

4 0

3 years ago

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NF3 has three F atoms bonded to a central N atom, with one lone electron pair on the N. What is the shape of this molecule?

Black_prince [1.1K]

<span>When you write the Lewis structure you see that you have three bonding pairs and one lone pair on nitrogen, the central atom.

What (a) is asking for is what is called the "electron pair geometry", which in your case is tetrahedral. As the name implies, the electron pair geometry looks only at the electron pairs, and not whether they are bonding or not. The electron pair geometry will establish what geometry the molecule can be.

Question (b) is asking for the "molecular geometry", which is trigonal pyramidal. "Trigonal pyramidal" is withing the "tetrahedral" family of electron pair geometries. The molecular geometry looks only at the shape created by the atoms which are bonded to the central atom. The N and 3 F's form a trigonal pyramid, not a tetrahedron, since there is not a fourth atom bonding at the lone pair. </span>

5 0

3 years ago

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The four fundamental forces are arranged in the increasing order of their relative strength.

Sonbull [250]

Answer:

Both weak interaction and strong interaction act only between non-atomic particles.

Explanation:

Arrange the four fundamental forces in increasing strength:

Gravity,
"Weak" interaction,
Electromagnetic interaction, and
Strong interaction.

Thus, this question is about the strong and weak interactions. In particular, the choices are concerned about properties common to both types of interactions.

The ranges of electromagnetic interaction and gravity are infinite. However, the ranges of strong and weak interactions are much smaller. The maximum range of weak interactions is around $\rm 10^{-16}\; m$ . The maximum range of strong interactions is around $\rm 10^{-15}\;m$ .

Weak interaction occurs between left-hand fermions. This class of particles includes neutrinos, which do not carry any charge. The most energetic strong interactions occur between quarks, which are all charged. Some of the weaker residual strong interactions occur between particles that are made of quarks. That includes both protons and neutrons (which do not carry any charge.) This type of strong interaction holds nuclei intact.

Consider the choices:

The range of neither weak nor strong interactions is infinite. This range is smaller than the radius of atomic nuclei.
Strong and weak interactions indeed act between charged particles. However, there are exceptions such as neutrinos and neutrons.
The ranges of strong and weak interactions are so small that they are nearly undetectable outside of atomic nuclei. Both interactions act only between non-atomic particles such as protons and neutrons as well as electrons and quarks.
Atoms are too large to experience weak and strong interactions.

6 0

3 years ago