WebGroup 18 is called noble gases or inert gases. Their outermost shell is completely filled. Due to this stable electronic configuration, they generally don’t react with the other elements. When we talk about the periods of a … WebThey are helium, neon, argon, krypton, xenon, and radon. 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 \left [ \ce {Ne} \right] for the 1s^2 2s^2 2p^6 part of the configuration.

The periodic table, electron shells, and orbitals - Khan …

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The inert gas present in the second long period is: - Toppr

Web18 jun. 2024 · Sodium, element number 11, is the first element in the third period of the periodic table. Its electron configuration is \(1s^2 2s^2 2p^6 3s^1\). The first ten electrons … WebThese elements are known as Inert gases. 3, What is meant in the periodic table by : (a) a group, and ... 3rd period, of the modern periodic table? Solution: a) The first period consists of two elements. b) The first period consists of eight elements. 7. How does the number of i) Valence electrons ii) valency vary on moving from left to right. Web1) Atomic Size. As the size of the atom increases, the distance between the nucleus and the last shell which receives the incoming electrons increases. This decreases the force of … create funny photos