Giving examples in each case,give a brief description of the following chemical families.

i)Group IA elements such as Lithium, sodium, and potassium of the leftmost column of the periodic have a single electron in their outermost s orbital (ns¹).

ii)Group IIA elements such as Beryllium and magnesium have two electrons in their outermost shell, ns²

iii)Group IIIA have three electrons in their outermost shell, ns²np¹. Similar observations can be made for other A group elements.Example Aluminium.

iv)Noble Gases. (VIIIA elements), the noble gases also called inert gases because no chemical reactions were known for them. We now know that the heavier members do form compounds, mostly with fluorine and oxygen. Except for helium, each of these elements has eight electrons in its outermost occupied shell. Their outer shell may be represented as having the electron configuration -ns²np⁶.Example Argon.

v)f-Transition Elements (inner transition elements) are elements in which electrons are being added to f orbitals. In these elements, the second from the outermost occupied shell is building from 18 to 32 electrons.

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sharon kalunda answered the question on April 8, 2019 at 12:15