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ipn [44]
3 years ago
14

How was each element's atomic number determined?

Chemistry
2 answers:
Hatshy [7]3 years ago
7 0

Answer:

the number of proton of an atom determines the the atomic number .

Fantom [35]3 years ago
3 0
The number of protons of an atom determines the atomic number
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Mass x height x gravity is the formula to calculate:
Sindrei [870]

Answer:

Potential energy

Explanation:

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Write a balanced chemical equation to show the reaction of naoh with the monoprotic acid hcl.
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How are rare earth elements like neodymiun important to our technological world?
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3 years ago
Predict the reactivity of silicon in water relative to that of sodium, magnesium, and aluminium. Explain your answer. How does t
Inessa [10]

Answer:

See explanation

Explanation:

The reactivity of metals has a lot to do with their position in the electrochemical series. However, it is also known that metallic character decreases across the period. This implies that as we move from left to right along the periodic table. Sodium, magnesium, aluminum and silicon continues to decrease in metallic character. As a matter of fact, silicon is a metalloid and not a pure metal.

Sodium reacts with cold water to give a vigorous reaction,magnesium and aluminium reacts with steam at red heat.

Silicon does not react with water, even as steam, under normal conditions.

5 0
3 years ago
What is a nonmetal in the same group as Pb​
kupik [55]

Answer:

Carbon

Explanation:

The non metal in the same group as Pb is carbon or C .

I hope this helps you.

6 0
3 years ago
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