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Yanka [14]
3 years ago
10

Number of different bond angles for pbr2f3

Chemistry
1 answer:
kupik [55]3 years ago
5 0
This is very confusing.
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The mass number of a nucleus is the number of: protons nucleons electrons neutrons
KiRa [710]

protons

there aint rlly an explanation tbh

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3 years ago
J. J. Thomson’s experiment disproved the theory that an atom
gizmo_the_mogwai [7]

Answer : J. J. Thomson’s experiment disproved the theory that an atom is indivisible.

Explanation : Scientist J.J. Thomson did his experiment to prove the existence of electrons. He did the experiment using a cathode ray tube, in which a vacuum-sealed tube with a cathode and anode on one end was placed which created a beam of electrons that traveled towards the other end of the tube. This was the theory that proved that atoms consists of many subatomic particles namely electrons.

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3 years ago
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the element Potassium is found in the fourth. Of the periodic table what does that tell you about an atom of potassium​
alexira [117]
It tells you how many atoms it has, how many protons it contains and the number of electrons.

6 0
3 years ago
add charges, single electron dots, and/or pairs of dots as appropriate to show the lewis symbols for the most stable ion of each
Alja [10]

As - 8 dots and 3- charge, Se - 8 dots and 2- charge, Br - 8 dots and 1-, K - zero dots and +1 charge, Ca - zero dots and +2 charge, Ga - zero dots and +3 charge.

<h3>In the periodic table of the elements, what is its Lewis symbol?</h3>

The valence electrons of each element are represented by dots that surround their chemical symbol in a Lewis dot symbol. The Lewis dot symbol's dots correspond to the valence electrons, which correspond to the final digit of the element's group number as in periodic table.

<h3>What's an example of a Lewis symbol?</h3>

Two chlorine atoms, for instance, share one pair of electrons when they combine to form a chlorine molecule. According to the Lewis structure, each Cl atom contains one shared pair of electrons and pairs of electrons that aren't employed in bonds (known as lone pairs) (written between the atoms).

To know more about  Lewis symbol visit:

brainly.com/question/13676318

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6 0
1 year ago
Why don't polar molecules and nonpolar molecules mix?
Bad White [126]

Solution:

By the following ways the polar molecule doesn’t mix with non-polar molecule  

Polar molecules have a portion of their molecule which, relative to the rest of the molecule, is more negative.  

Water, for example, has a bent, or V-shape, due to the 2 lone electron pairs on oxygen. This makes the oxygen end more negative than the hydrogen end. This negative area allows for hydrogen bonding between that molecule and other molecules which are also polar.  

Non-polar molecules don't have a portion of the molecule which is more negative than the rest. An example of this is a hydrocarbon, like butane. Because there is no relatively negative region to the molecule, it cannot partake in hydrogen bonding and therefore does not mix with polar molecules.  

Thus we can conclude that Polar mixes with polar; non-polar mixes with non-polar.


3 0
4 years ago
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