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प्रश्न
Give the symbol and valency of the following element and radical.
Calcium
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उत्तर
| Element/Radical | Symbol | Valency |
| Calcium | Ca | two |
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संबंधित प्रश्न
In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21, and 38. Which of these have physical and chemical properties resembling calcium?
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(i) Which two elements belong to the same group?
(ii) Which two elements belong to the same period?
Give reasons for your choice.
State its position in the periodic table?
How does the electronic configuration of an atom relate to its position in the modern periodic table?
Give the symbol and valency of the following element and radical.
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Give the symbol and valency of the following element and radical.
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The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belong to the same group?
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has same valency as Lithium.
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?
Define periods of modern periodic table.
