Explain chemical properties of Group 16 elements.
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Metallic character increases down the group, with tellurium classified as a metalloid and polonium as a metal. Melting point, boiling point, density, atomic radius, and ionic radius all increase down the group. Ionization energy decreases down the group.
Answer:
The noble gases are a group of chemical elements that make up Group 18 on the periodic table. These gases all have similar properties under standard conditions: they are all odorless, colorless, monatomic gases with very low chemical reactivity.
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Chemistry > The p-Block Elements > Group 18 Elements
The p-Block Elements
Group 18 Elements
How many of you have played with the helium balloons when you were kids? Well, some of you do that even today! However, are you aware of what helium is? Why is it used in balloons? Why don’t the other group 18 elements find their use in these balloons? We will read about all this in this chapter. We will look at the physical properties, chemical properties and uses of the group 18 elements.
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Group 18 Elements
The Group 18 elements include Helium(He), Neon(Ne), Argon(Ar), Krypton(Kr), Xenon(Xe), and Radon(Rn). They are referred to as noble gases or inert gases. This means that these elements are chemically inert and do not take part in any reaction.
Electronic Configuration of Group 18 Elements
The general configuration of the valence shell is ns2np6. The exception to this is helium. It has the configuration of 1s2. As they have the octet configuration in their valence shells already, they are quite chemically inert. they have the valency of zero.
The Occurrence of These Elements
All of these elements occur in a free state in the atmosphere. Apart from Radon, every other noble gas exists in the atmosphere. Argon alone constitutes 0.93% of the total atmosphere. We can prepare this element by the fractional distillation of liquid air. We can find neon, helium and argon in certain water springs as disintegrated gasses. Also, we can obtain Radon by the decay of radium and thorium minerals.SIGNUP
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Chemistry > The p-Block Elements > Group 18 Elemen
Explanation:
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