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प्रश्न
What is meant by a Group in the Periodic Table?
उत्तर
The verticle columns from top to bottom are called groups.
संबंधित प्रश्न
List any two properties of the elements belonging to the first group of the modern periodic table.
How does the number of valence electrons vary on moving from left or right in the first period of the periodic table?
Which of the following set of elements is written correctly in the order of their increasing metallic character?
(a) Mg, Al, Si
(b) C, O, N
(c) Na, Li, K
(d) Be, Mg, Ca
State the trends in physical properties on moving down the group. Give an example to illustrate.
Which element has:
twice as many electrons in its second shell as in its first shell?
An element 'X' (Atomic number – 20) burns in the presence of oxygen to form a basic oxide.
(a) Identify the element and write its electronic configuration.
(b) State its group number and period number in the Modern Periodic Table.
(c) Write a balanced chemical equation for the reaction when this oxide is dissolved in water.
F, Cl and Br are the elements each having seven valence electrons. Which of these (i) has the largest atomic radius, (ii) is most reactive? Justify your answer stating reason for each.
What will be the valency of an element of atomic number 9 (nine)?
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
The position of elements A, B, C, D and E in the periodic table are shown below:
|
Group 1 |
Group 2 |
Group 17 |
Group 18 |
|
|
|
|
D |
|
|
B |
C |
|
|
A |
|
|
E |
Which type of ion will be formed by elements A, B, and C.
