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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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2. Define and describe a mixture using examples.
netineya [11]

A mixture is a substance made by combining two or more different materials in such a way that no chemical reaction occurs.

A mixture can usually be separated back into its original components. Some examples of mixtures are a tossed salad, salt water and a mixed bag of M&M's candy.

5 0
3 years ago
What are some physical characteristics of the Sun?
Zolol [24]

the sun has a radius of 432,169 miles

5 0
3 years ago
How does heat differ from temperature?
mote1985 [20]

Answer: Option (c) is the correct answer.

Explanation:

Temperature is used as for measuring the average kinetic energy present in a substance or object.

The internal kinetic energy obtained by the molecules of an object is known as thermal energy.

Hence, temperature measures the thermal energy of an object.

Whereas when this thermal energy flows from a hotter object to a cooler object which are placed adjacent to each other then it is known that heat is flowing.

Thus, we can conclude that heat differ from temperature as temperature measures thermal energy, and heat is the flow of thermal energy.

7 0
3 years ago
Read 2 more answers
If is found that 24.68 mL of .1165 M NaOH is needed to titrate .2931 g of an unknown acid to the phenolphthalein end point. Calc
Lemur [1.5K]

Answer: The equivalent mass of the acid is 83.16 grams

Explanation:

To calculate the number of moles for given molarity, we use the equation:

\text{Moles of solute}={\text{Molarity of the solution}}\times{\text{Volume of solution (in L)}}  

Molarity of NaOH solution = 0.1165 M

Volume of NaOH solution = 24.68 mL = 0.02468 L

Putting values in equation 1, we get:

\text{Moles of} NaOH={0.1165M}\times{0.02468L}=2.875\times 10^{-3}moles=2.875\times 10^{-3}geq    

( as acidity of NaOH is 1)

For end point:  gram equivalents of acid =  gram equivalents of base = 2.875\times 10^{-3}

Mass of acid=gram equivalents\times {\text {Equivalent mass}}

0.2391=2.875\times 10^{-3}\times {\text {Equivalent mass}}

{\text {Equivalent mass}}=83.16g

Thus equivalent mass of the acid is 83.16 grams

5 0
3 years ago
Goldsmith believed that an excess of anything can lead to unhappiness.<br> True or false
aksik [14]
It is true because you can die of anything thus haveing an excess of ANYTHING can kill you and cause a family unhappiness

3 0
4 years ago
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