Question

Name two elements having 05 electrons in their outst most shells?​

Answer 1

Answer:

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Explanation:

Magnesium and calcium are the two elements which have two electrons in their outermost orbit.

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Answer 2

Concept Involved:

=> The Group Number gives the number of valence electrons.

=> The Period Number indicates the number of electron shells present.

Hence,

=>All elements in Group - 15 or Group V-A of the Periodic table have 5 valence electrons in their outermost shell.

=> Examples include : Nitrogen, Phosphorous, Antimony, Arsenic, Bismuth, etc.

More to know,

=> The elements of Group - 15 show similar chemical properties and all of them form gaseous trihydrides ( Eg: NH3, PH3, AsH3, SbH3).

=> These elements are also known as Pnictogens.

=> The exhibit -3 and +5 as the most common oxidation states.