Question

solve this que i wll mark her or her as brainliest

Answer 1

a= option 1

b= option1

c= option 1
D=option 2

a=12
b= 2nd group

3rd period

cl= MgCl


hope this helps you my frnd ✌️✌️✌️

Answer 2

★ Ello ★


here is your answer !!


a ) => 1 ) group 2 element is known as alkaline earth metal


alkaline earth metal include :-

Be


Mg

Ca


Sr ....



2 ) 1 ) Na.

when the sodium is a react with chlorine there is formation of ionic bond so due to formation of ionic bond there is high melting and boiling point.


Na + cl -


NaCl


remember :-

NaCl is ionic bonds so there is a strong melting and boiling point.



sodium have valency of 1 and chlorine have also valency of 1 so when they react or they form Bond their valency come out to be


NaCl



3 ) Modern Periodic Table is poses by Henry moseley according to him nonmetal are found in P block



hence , option number 2 ) is correct



example of non metals are :-
Carbon
oxygen
sulpher
etc



3 )


a ) atomic number of the element is 12




b ) the group of element is:- 2
because according to rule if the number is not greater then by 3 we can't add 10.


so , the group element is 2




c ) the period that belong is 3 because.


2 , 8 , 2


there are three still present so it belong to 3rd period .




d ) clearly the element is alkaline earth metal so , it is magnesium( Mg )


show the element that resemble to magnesium is


Be


other element that resemble to magnesium is.



Be ,

Mg ,

Ca

Sr


etc



hope it helps you dear !!!!



$thanks$