Advertisements
Advertisements
प्रश्न
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
उत्तर
Element A belongs to group 2 of the periodic table, hence it shows a valency of 2.
Element F belongs to group 17 of the periodic table and shows a valency of 1.
So the formula of the compound formed will be AF2.
APPEARS IN
संबंधित प्रश्न
What is meant by a group, in a periodic table?
where should hydrogen be placed in the modern periodic table? Give reason for your answer.
The three elements having chemical symbols of Si, B and Ge are:
(a) all metals
(b) all non-metals
(c) all metalloids
(d) Si is metalloid, B is metal and Ge is non-metal
What is a period in a periodic table?
Answer the following in respect of element `31/15 P`
Give its electronic configuration
State the number of elements in Period 1 of the Periodic Table.
State the number of elements in Period 2 of the Periodic Table.
Which of the following statements about the Modern periodic table is correct?
Mendeleev's periodic table : atomic mass : : Modern periodic table : _______
Spot the error:
The elements of group 13 are called the carbon family.
