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प्रश्न
Elements in the modern periodic table are arranged in ______groups and______ periods.
पर्याय
7, 18
18, 7
17, 8
8, 17
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उत्तर
Elements in the modern periodic table are arranged in 18 groups and 7 periods.
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संबंधित प्रश्न
Fill in the following blank with suitable word:
Group 18 elements are called ...............
Which element has the electronic configuration 2, 8, 2?
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
Explain why, the first period of the periodic table has only two elements whereas second period has eight elements
What are the merits of the modern periodic table of elements?
Helium and neon are unreactive gases. What, if anything, do their atoms have in common?
Give the symbol and valency of the following element and radical.
Ammonium
Which of the following elements will form an acidic oxide?
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
1H2 is an isotope of hydrogen. In the modern Periodic Table it will ______.
