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lilavasa [31]
3 years ago
5

Atoms of the LEAST reactive elements tend to have A. one or seven valence electrons. B. eight valence electrons. C. four or five

valence electrons. D. no valence electrons
Chemistry
2 answers:
Tomtit [17]3 years ago
3 0
B. eight valence electrons.
nasty-shy [4]3 years ago
3 0

Answer: Option (B) is the correct answer.

Explanation:

When an atom's octet or shell is filled then the atom becomes stable. Therefore, the atom will be very less reactive as it does not need more electrons to fill its shell.

For example, neon has atomic number 10 and electron distribution in its shells is 2, 8. As there are 8 electrons in its valence shell this means that it has attained stability according to the octet rule. Hence, it will be least reactive.

Thus, we can conclude that atoms of the LEAST reactive elements tend to have eight valence electrons.

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8. What group numbers are the transition elements in?
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3 0
3 years ago
select the equations that are correctly balanced. h2o 2o2? h2o2 fe2o3 3h2? 2fe 3h2o al 3br2? albr3 caco3? cao co2 can you clarif
natta225 [31]
<span>The choices are as follows:
h2o + 2o2 = h2o2
 fe2o3 + 3h2 = 2fe + 3h2o
al + 3br2 = albr3
caco3 = </span><span>cao + co2

The correct answers would be the second and the last option. The equations that are correctly balanced are:

</span> fe2o3 + 3h2 = 2fe + 3h2o 
caco3 = cao + co2

To balance, it should be that the number of atoms of each element in the reactant and the product side is equal.
8 0
3 years ago
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