جميع المواضيع المتعلقة بـ ‘s-orbital’

 

Four blocks of elements in the periodic table

Four blocks of elements in the periodic table.

1 –  s block elements. Elements of groups 1 and 2 each possessing one and two electrons respectively in the  s orbital of their outermost orbits are together known as  s block elements.

Example :                 Na:  1s2 2s2 2p6 3s1                   Mg:  1s2 2s2 2p6 3s2

Characteristics of s block elements.

a -They are metallic in nature…

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Shapes  of s and p orbitals

Shapes  of s and p orbitals

s orbital can have only one possible orientation (as it’s m quantum is zero), it is spherical in shape i.e., in an s orbital the electron distribution is symmetrical around the nucleus in all directions. However the size of s orbital depends on principal quantum number. Large n means large size. Thus 3s orbital is larger than 2s orbital.

There…

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Energy levels and sub-levels

Not all the electrons in an atom are located the same distance from the nucleus. Electrons reside in regions of space called shells, or principal energy levels, which are identified with numbers called principal quantum numbers. The number of electrons that can exist in each energy level is limited.

The maximum number of electrons for a specific energy is equal to 2n2, where n is the number of the…

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The Periodic Table

Elements can be grouped into classes according to the chemical compounds they form. If the elements are written in a table in order of increasing atomic weights, they fall naturally into a series of columns, with members of a given chemical group in the same column. This is called the periodic table of the elements.The term periodic means recurring at regular intervals. The original periodic tables were…

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