What do you mean by noble gas configuration?

A noble gas configuration of an atom consists of the elemental symbol of the last noble gas prior to that atom, followed by the configuration of the remaining electrons. So for sodium, we make the substitution of [Ne] for the 1s22s22p6 part of the configuration. Sodium’s noble gas configuration becomes [Ne]3s1.

What happens when you add an electron to a noble gas?

Even though the noble gases are small atoms, their outer energy levels are completely filled with electrons and therefore, an added electron cannot enter their outer most energy level. Any electrons added to a noble gas would have to be the first electron in a new (larger) energy level.

The “noble gases” were called that in historical chemistry because of their stability ” they do not react readily with other compounds. This is because their outer (valence) electron shell or orbital is completely filled, making it very stable.

What is the correct electron configuration for lithium?

[He] 2s1

What is the noble gas notation for helium?

Helium’s electron configuration is [1s2] . But, helium is in the last row of the periodic table, which are noble gases. [He] .

Why does each period end with a noble gas?

Each of the noble gases, in the last column of the periodic table, has its last electron shell completely filled. The elements with a filled shell configuration are the most stable and have the lowest tendency of all elements to gain electrons, lose electrons, or share electrons in chemical bonds.

What is the SPDF notation of helium?

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