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iragen [17]
3 years ago
15

Which of these changes do not involve forming or breaking chemical bonds?

Chemistry
2 answers:
gregori [183]3 years ago
5 0
D
Boiling and melting are both physical changes so do not involve the formation or breakage of chemical bonds.
azamat3 years ago
5 0

Hello, the correct answer to your question is, D.  boiling and melting

I hope this helped!

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True or false: the most easily ionizable elements are the most electronegative.
ehidna [41]
<span>False, This is because when you can easily ionize and atom or the chances of it being ionizable are quite high, it means that that particular atom have very low ionization potential that is the reason why it was easily ionizable An atom with a high ionization power and a firmly negative electron fondness will both pull in electrons from different particles and oppose having its electrons taken away; it will be an exceedingly electronegative molecule.</span>
3 0
2 years ago
Which of the following atoms could have an expanded octet when it is the central atom in a covalent compound?a) B
miv72 [106K]

Answer:

only chlorine can expand its octet.

Explanation:

An atom can expand its octet is it has empty d orbital

the electronic configuration of given elements will be:

B : 1s2 2s2 2p1 [Valence shell n =2 no d orbital]

O :1s2 2s2 2p4 [Valence shell n =2 no d orbital]

F : 1s2 2s2 2p5 [Valence shell n =2 no d orbital]

Cl :1s2 2s2 2p6 3s2 3p5 3d0 [Valence shell n =2 no d orbital]

Out of given elements only chlorine has empty d orbitals in its valence shell

Thus only chlorine can expand its octet.

3 0
3 years ago
What is meant by collision theory?
Tcecarenko [31]

Answer:

The collision theory states that a chemical reaction can only occur between particles when they collide (hit each other).

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4 0
2 years ago
Group I element are very active.give reason​
RUDIKE [14]

Answer:

wat

Explanation:

7 0
3 years ago
Electronegativity is defined as a measure of the tendency of atoms to attract electrons in a chemical bond.
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True.......................................
4 0
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