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Evgen [1.6K]
2 years ago
14

Use the portion of the periodic table shown below to answer the questions.

Chemistry
1 answer:
Bingel [31]2 years ago
4 0

The two elements that have the same properties as sodium are potassium  and rubidium .

<h3>What is periodic table?</h3>

The periodic table is an arrangement of the elements in order of increasing atomic number.

From the list, the two elements that have the same properties as sodium are potassium  and rubidium .

Proton has an atomic number of 20 and a mass number of 40. The number of electrons is the same as the number of protons. Given that the atomic number is the number of protons present, we have 20 electrons and 20 protons.

Number of neutrons = Mass number  - Number of protons

= 40 - 20 = 20 neutrons

Learn more about periodic table:brainly.com/question/11155928

#SPJ1

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What volume is occupied by 5.80×10^20 molecules of an ideal gas at STP?
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Answer:

<u></u>

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Explanation:

The current temperature and pressure at <em>STP </em>(Standard Temperature and Pressure) stated by IUPAC are:

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Using the <em>ideal gas </em>equation, pV = nRT,  and the Avogadro constant, you can find the<em> volume occupied by 5.80 × 10²⁰ molecules.</em>

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