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प्रश्न
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 a similar structure to diamond.
उत्तर
Silicon
Reason:
Tetrahedral structure
OR
Tetravalency or Four valency and catenation
OR
Covalent bonding like carbon
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संबंधित प्रश्न
Name the type of elements which have outermost shell incomplete.
Name the type of elements which have two electrons in the outermost orbit.
Write a short note.
Structure of the modern periodic table.
Give the symbol and valency of the following element and radical.
Ammonium
Give the symbol and valency of the following element and radical.
Sulphite
The modern periodic table shows the molecular masses of the elements in each frame.
What is the symbol of the element Tungsten?
Which of the following statements about the Modern Periodic Table is correct:
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 Noble gas?
Give the criteria on the basis of which elements are placed (i) in a group and (ii) in a period in the modern periodic table. The atomic number of an element is 16. According to the criteria, in which group and period it should be placed?
