Any substance that contains only one type of atom is referred to as an element.Elements are the "building blocks" of everything. Each element only contains one type of atom. If substances carry more than one type of atom, then they are compounds.
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Answer:
Pressure is often defined as a measure of force applied on an area, or over a unit area.
Explanation:
c) water vapor is less dense
Answer : The volume of solution will be 2.96 liters.
Explanation :
Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.
Formula used :

In this question, the solute is NaF.
Now put all the given values in this formula, we get:



Therefore, the volume of solution will be 2.96 liters.
The number of electrons in each of Neon's shells is 2, 8 and its electronic configuration is 1s2 2s2 2p6.
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Neon Properties.
Melting Point: -248.59°C, -415.462°F, 24.56 K