Question

among the following, identify the electronic configuration of Noble gas (2,8,7) (2,8,8) (2,8, 2)​

Answer 1

To identify:

• Noble gas among the given options.

Solution:

First of all, what is a noble gas ?

• Noble gases are a group of non-reactive, stable gases present in the 18th group of the Modern Periodic Table.

• Examples are Neon, Argon, Xenon, etc.

• Their valence shell will always have a stable octet configuration.

Now, search for that element (among the given options) which has an octet :

• (2,8,8) has an octet (i.e. 8 electrons) in its valence shell.

So, (2,8,8) is the configuration of a Noble Gas.

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Answer 2

Answer:

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