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प्रश्न
Give the symbol and valency of the following element and radical.
Oxygen [Oxide]
उत्तर
| Element/Radical | Symbol | Valency |
| Oxygen [Oxide] | O | two |
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संबंधित प्रश्न
Which of the following statement about the modern periodic table is correct?
(a) It has 18 horizontal rows known as periods.
(b) It has 7 vertical columns known as periods.
(c) It has 18 vertical columns known as groups.
(d) It has 7 horizontal rows known as groups.
State the term
The tabular arrangement of elements in horizontal rows and vertical columns _________
State its position in the periodic table?
Answer the following question.
How it can be proved that the basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different elements?
Give the symbol and valency of the following element and radical.
Calcium
State the number of elements in Period 1 of the Periodic Table.
What are groups and periods in the modern periodic table?
The arrangement of elements in the Modem Periodic Table is based on 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 |
Write the molecular formula of the compound formed by the combination:
A and F
An element has 2 electrons in its N shell.
State its position in periodic table.
