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skelet666 [1.2K]
3 years ago
10

Atoms contain positive, negative, and neutral. what happens when two positively charged particles are close together?

Chemistry
2 answers:
mote1985 [20]3 years ago
8 0
<h2>A. They repel each other</h2>

balandron [24]3 years ago
3 0

Answer:

they repel each other

Explanation:

A is the ans

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The highly reactive elements in group 7a are known for forming salts.what are they called
yaroslaw [1]
Group 7A are halogens 

If you look at a periodic table, these elements include F, Cl, Br, I, and At. Some well known salts are KCl and NaCl (better known as table salt!)
7 0
3 years ago
The atomic weight of boron is reported as 10.81, yet no atom of boron has the mass of 10.81 amu. explain
aivan3 [116]
<span>Boron has a lot of different isotopes, most of which having a very short half life (ranging from 770 milliseconds for Boron-8 down to 150 yoctoseconds for boron-7). But the two isotopes Boron-10 and Boron-11 are stable with about 80.1% of the naturally occurring boron being boron-11 and the remaining 19.9% being boron-10. The weighted average weight of those 2 isotopes has the value of 10.81. The reason they use the average mass of an element for it's atomic weight is because elements in nature are rarely single isotopes. The weighted average allows us to easily compare relative number of atoms of one element against relative numbers of atoms of another element assuming that the experimenters are getting isotope ratios close to their natural ratios.</span>
7 0
3 years ago
Explain the different melting points between ionic and covalent bonding
yarga [219]

Ionic bonding is formed in Ionic compounds due to electrostatic force between the oppositely charged ions.


In covalent bonds electrons are shared between the atoms. In case of ionic bond the bond is stronger as there is complete transfer of electrons from one ion to the other.


Since the ionic bonds are more difficult to break than the covalent bonds, ionic compounds have a higher melting point than covalent compounds.

5 0
3 years ago
Read 2 more answers
For the reaction, identify the Lewis acid and the Lewis base.<br> AlF3 + CH3F → CH3+ + [AlF4]-
Ivanshal [37]
Answer:
            AlF₃ is Lewis Acid

            CH₃F is Lewis Base

Explanation:
                     According to Lewis concept ,"those compounds which donate pair of electrons are called as Lewis Base and those accepting pair of electrons are called as Lewis Acid.

In Given Reaction,
<span>                               AlF</span>₃<span> + CH</span>₃<span>F → CH</span>₃⁺<span> + [AlF</span>₄<span>]</span>⁻

AlF₃ is acting as acid because the octet of Al is not complete, hence it has tendency to accept electrons.

CH₃F is acting as a base because the F atom containing three lone pair of electrons can donate it to Al metal resulting in the formation of electrophile i.e. CH₃⁺.
5 0
3 years ago
HELP PLEASE ANSWER PLEASE ITS URGENT!!<br><br> -unnecessary comments will be reported.
Verizon [17]

Answer:

19. 1, 2, 3, 4, 5, 6, 7, 8

20. Li=1+, Be=2+, B=3+, C=4+

21. N=3-, O=2-, F=1-

Explanation:

8 0
3 years ago
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