Elements of group I A, II A, III A are more reactive as we go down in the group of the periodic table, Why?
A small part of periodic table is given below:
Identify the group of highly reactive metals, the highly reactive non metal and metalloids in the given table.
I A |
II A |
III A |
IV A |
V A |
VI A |
VII A |
O |
Li |
Be |
B |
C |
N |
O |
F |
Ne |
Na |
Mg |
Al |
Si |
P |
S |
Cl |
Ar |
A part of periodic table is given below:
|
I A |
II A |
III A |
IV A |
V A |
VI A |
VII A |
O |
Period-2 |
Li |
Be |
B |
C |
N |
O |
F |
Ne |
Period-3 |
Na |
Mg |
Al |
Si |
P |
S |
Cl |
Ar |
Study the above periodic table to answer the following question.
Write the name of different types of periods with respective position.
Why is classification of elements necessary?
What do you mean by classification of elements and periodic table of elements?
Why is the position of Hydrogen still controversial in modern periodic table?
PathshalaNepal.com is a Registered Company of E. Pathshala Pvt Ltd Nepal. Registration number : 289280
© 2020. All right Reversed.E. Pathshala Pvt Ltd