Q5. Write down the important happening of the Battle
of Plassey in 1757 and 1761.
Answers
Answer:
↦ The electronic configuration of an element T is 2 , 8 , 8 , 1.
To Find :-
What is the group number of T.
What is the period number of T.
How many valence electrons are there in an atom of T.
What is the valence of T.
Is it a metal or non-metal.
Solution :-
\bigstar★ (i) What is the group number of T :
\implies⟹ The number of electrons in the outer most shells is n = 4 is 1.
So, it is belong to the group no 1.
\rule{150}{2}
\bigstar★ (ii) What is the period number of T :
\implies⟹ The number of electrons in the outer most shells is 4.
So, it has a period number of T is 4.
\rule{150}{2}
\bigstar★ (iii) How many valence electrons are there in an atom of T :
\implies⟹ It has only one electrons in the outer most shells.
So, there are only one valence electron.
\rule{150}{2}
\bigstar★ (iv) What is the valency of T :
\implies⟹ As it is T need to lose one electron to complete it's octet.
So, the valency of T is 1.
\rule{150}{2}
\bigstar★ (v) Is it a metal or non-metal :
\implies⟹ As it is has only one electrons in the outer most shells.
So, it is a metal.
\rule{150}{2}
EXTRA INFORMATION :
➲ Groups and their names :
1) Group-1 elements ➠ Alkali Metals
2) Group-2 elements ➠ Alkali earth metals
3) Group-11 elements ➠ Coinage metals
4) Group-15 elements ➠ Pnictogens
5) Group-16 elements ➠ Chalcogens
6) Group-17 elements ➠ Halogens
7) Group-18 elements ➠ Noble Gases
Answer:
the process by which plants make their own food is known as photosynthesis
Explanation:
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