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प्रश्न
Name the element which is in first group and third period.
उत्तर
Sodium (Na) is the element which is in the first group and the third period.
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संबंधित प्रश्न
Study the following table in which positions of six elements A, B, C, D, E and F are shown as they are in the modern periodic table:
|
Group→
Period↓ |
1
|
2
|
3-12
|
13
|
14
|
15
|
16
|
17
|
18
|
| 2 | A | B | C | ||||||
| 3 | D | E | F |
On the basis of the above table, answer the following questions:-
(i) Name the element which forms only covalent compounds.
(ii) Name the element which is a metal with valency three.
(iii) Name the element which is a non-metal with valency three.
(iv) Out of D and E, which is bigger in size and why?
(v) Write the common name for the family to which the elements C and F belong.
How do the valency and the atomic size of the elements vary while going from left to right along a period in the modern periodic table?
An element X belong to 4th period and 17th group, state.
no of valence electrons in it
Fill in the blank
Oxidising property ________from fluroine to iodine because the power to accpet electron decreases.
State the number of elements in period 1, period 2 and period 3 of the periodic table.
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.
An element A has 2 electrons in its fourth shell. State:
position in the periodic table
Answer the following question:
State the four blocks of the modern periodic table based on the electronic configuration of elements.
The similarities in the properties of a group of elements are because they have the same ______.
Give a reason for the following:
A transition from metallic to non-metallic elements is seen on moving from left to right in a period of the periodic table.
