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प्रश्न
How many periods and groups are there in the long form of periodic table?
उत्तर
There are seven periods and eighteen groups in the long form of the periodic table.
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संबंधित प्रश्न
How would the tendency to gain electrons change on moving from left to right in a period of the periodic table?
In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group.
The following diagram shows a part of the periodic table in which the elements are arranged according to their atomic numbers. (The letters given here not the chemical symbols of the elements):
| a 3 |
b 4 |
c 5 |
d 6 |
e 7 |
f 8 |
g 9 |
h 10 |
|
| i 11 |
j 12 |
k 13 |
l 14 |
m 15 |
n 16 |
o 17 |
p 18 |
(i) Which element has a bigger atom, a or f?
(ii) Which element has a higher valency, k or o?
(iii) Which element is more metallic i or k?
(iv) Which element is more non-metallic, d or g?
(v) Select a latter which represents a metal of valency 2.
(vi) Select a letter which represents a non-metal of valency 2.
Correct the statement.
Transition elements are placed at extreme right of the periodic table.
The modern periodic table is divided into which blocks?
The modern periodic table has 1 to 7 periods.
The longest period of the Modern Periodic Table is period.
Where would you locate the element with electronic configuration 2,8 in the Modern Periodic Table?
An element has the atomic number 12.
- Write the electric configuration.
- To which group and period does it belong.
Name the following metal:
A metal present in period 3, group 1 of the periodic table.
