Question

jo bataye ga usko Brainlist mark denge

Answer 1

$\LARGE\mathfrak{\underline{\underline{✪ \: \: \: Answers :-}}}$

__________________________________________________________

⟾ Element A :- Nitrogen ( 7 )

⟾ Element B :- Fluorine ( 9 )

⟾ Element C :- Sodium ( 11 )

⟾ Element D :- Silicon ( 14 )

⟾ Element E :- Chlorine ( 17 )

__________________________________________________________

⇝ Questions :-

❶ Ans . Fluorine ( 9 ) has the most electronegativity in the list of the given elements . Because as we go from left to right in a periodic table the electronegativity of the elements goes on increasing .

__________________________________________________________

❷ Ans. Silicon ( 14 ) is a metalloid because , their is an ziz - zag line in the modern periodic table and the elements which are on the border's of this line are known as metalloids .

__________________________________________________________

❸ Ans . Fulorine ( 9 ) is chemically the most active element, reacting with virtually every element. It even reacts with the noble gases at high temperatures and pressures. Fluorine has 7 valence electrons so, it only needs one more to complete the octet which it needs to be stable. Fluorine is most electronegative element. This makes it very easy for fluorine to bond with almost any other element.

__________________________________________________________

$\LARGE\mathfrak{\underline{\underline\textcolor{green}{✪ \: \: \: More \: \: \: Info. \: \: :-}}}$

• The modern periodic law can be stated as: ⤵️⤵️⤵️

• "The chemical and physical properties of elements are the periodic functions of their atomic numbers and electronic configurations."

__________________________________________________________

⇝ The modern long form of periodic table was constructed based on above law. The following points are considered while constructing the periodic table.⤵️⤵️⤵️

⟾ The elements in the periodic table are arranged in the increasing order of the atomic number.

⟾ Every row, also called as period, in the periodic table starts with the filling up of differentiating electron into a new quantum shell.

⟾ The elements in a vertical column called as group should get similar outer electronic configuration since it is observed that the elements with similar outer electronic configuration show similar chemical properties.

__________________________________________________________

Note* :-

Refer to all the attachment given above it will help u to know more about the Modern Periodic Table :)

__________________________________________________________