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Gennadij [26K]
3 years ago
9

An atom can be compared to our solar system because: WILL MAKE BRAINLIEST!

Chemistry
1 answer:
Sindrei [870]3 years ago
5 0

Answer:

uh i think its D All of the above

Explanation:

sorry if its wrong

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1. For each of the molecules below, determine the electron geometry, molecule geometry, and bond
Alexxx [7]

Answer:

CCl4- tetrahedral bond angle 109°

PF3 - trigonal pyramidal bond angles less than 109°

OF2- Bent with bond angle much less than 109°

I3 - linear with bond angles = 180°

A molecule with two double bonds and no lone pairs - linear molecule with bond angle =180°

Explanation:

Valence shell electron-pair repulsion theory (VSEPR theory) helps us to predict the molecular shape, including bond angles around a central atom, of a molecule by examination of the number of bonds and lone electron pairs in its Lewis structure. The VSEPR model assumes that electron pairs in the valence shell of a central atom will adopt an arrangement which tends to minimize repulsions between these electron pairs by maximizing the distance between them. The electrons in the valence shell of a central atom are either bonding pairs of electrons, located primarily between bonded atoms, or lone pairs. The electrostatic repulsion of these electrons is reduced when the various regions of high electron density assume positions as far apart from each other as possible.

Lone pairs and multiple bonds are known to cause more repulsion than single bonds and bond pairs. Hence the presence of lone pairs or multiple bonds tend to distort the molecular geometry geometry away from that predicted on the basis of VSEPR theory. For instance CCl4 is tetrahedral with no lone pair and four regions of electron density around the central atom. This is the expected geometry. However OF2 also has four regions of electron density but has a bent structure. The molecule has four regions of electron density but two of them are lone pairs causing more repulsion. Hence the observed bond angle is less than 109°.

8 0
2 years ago
What is Artificial selection???
kati45 [8]

Answer:

The process of selection conducted under human direction.

Explanation:

For example, by allowing only like individuals to breed, breeders have created the great variety of dog breeds and crop plants

7 0
2 years ago
List planets of rocks
irina [24]

Answer:

in our solar system, the rocky planets are Mercury, Venus, Earth, and Mars

hope this helps :)

Explanation:

6 0
3 years ago
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What's meant by the term enantiotropy?​
Mila [183]

Answer:

the relation of two different forms of the same substance (such as two allotropic forms of tin) that have a definite transition point and can therefore change reversibly each into the other — compare monotropy.

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The diagram shows one period of the Periodic Table. Li ,Be ,B , C,N,O,F,Ne .Which two elements form acidic oxides?
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A -carbon and lithium.

Explanation:

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