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प्रश्न
State the group and period, of the element having three shells with three electrons in valence shell.
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उत्तर
If there are three shells, the element belongs to the third period. An element with three valence electrons belongs to the 13 group.
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संबंधित प्रश्न
The modern periodic table was prepared by ______.
State how the valency of elements varies in a period of the periodic table?
What are the groups in a periodic table? Give two characteristics of each.
The elements A, B, C and D belong to groups 1, 2, 14 and 17 respectively of the periodic table. Which of the following pairs of elements would produce a covalent bond?
(i) A and D
(ii) C and D
(iii) A and B
(iv) B and C
(v) A and C
Define:
Periodic table
Write the number of protons, neutrons and electronic configuration of \[\ce{_19^39K, _15^31P}\]. Also state their position in periodic table.
The electronic configuration of an element T is 2, 8, 8, 1.
What is the group number of T?
What is the number of elements in the 1st period?
In the modern periodic table, elements are arranged according to their ______
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 |
Which of the element is a Metalloid?
