Advertisements
Advertisements
प्रश्न
The modern periodic table was prepared by ______.
पर्याय
Dobereiner
Newlands
Bohr
Mendeleev
उत्तर
The modern periodic table was prepared by Mendeleev.
APPEARS IN
संबंधित प्रश्न
State modern periodic law.
An element E has following electronic configuration:
|
K |
L |
M |
|
2 |
8 |
6 |
(a) To which group of the periodic table does element E belong?
(b) To which period of the periodic table does element E belong?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.
What is meant in the periodic table by a period?
Give the symbol and valency of the following element and radical.
Zinc
Give the symbol and valency of the following element and radical.
Carbonate
What are groups and periods in the modern periodic table?
______ forms the basis of the modern periodic table.
Which of the following is the outermost shell for elements of period 2?
A part of modern periodic table is given below. On its basis, answer the following questions:
| Group No. → | 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period ↓ | ||||||||
| 2 | A | B | ||||||
| 3 | E | D | F | C |
Write the molecular formula of the compound formed by the combination:
A and F
Name the following metal:
A metal present in period 3, group 1 of the periodic table.
