1 |
How many blocks are presnt in modern periodic table |
2
3
4
5
|
2 |
How many elements are present in 7th period. |
2
8
18
23
|
3 |
How many elements are present in 6th period. |
2
8
18
32
|
4 |
How many elements are present in each 4th and 5th period. |
2
8
32
18
|
5 |
How many elements are prsent in each 2nd and 3rd period. |
2
32
18
8
|
6 |
How many elements are present in 1st period. |
1
2
8
18
|
7 |
How many periods are presnet in the modern periodic table. |
7
8
10
12
|
8 |
How many periods are present in the modern periodic table |
7
8
10
12
|
9 |
How many groups are present in the modern periodic table. |
8
10
15
18
|
10 |
Transition elements are |
All gases
All non metals
All Metals
All metalloids
|
11 |
Which one of the following halongesn has lowest electronetivity |
Iodine
Chlorine
Fluorine
Bromine
|
12 |
4th and 5th priod of the long form of periodic table are called. |
Short periods
Normal periods
Very long peiods
Long periods
|