Advertisements
Advertisements
प्रश्न
Give the symbol and valency of the following element and radical.
Sulphur [Sulphide]
उत्तर
| Element/Radical | Symbol | Valency |
| Sulphur [Sulphide] | S | two |
APPEARS IN
संबंधित प्रश्न
In the Modern Periodic Table, which are the metals among the first ten elements?
Which of the following statement is correct in regard to the classification of elements?
(a) Elements in modern periodic table are arranged on the basis of increasing atomic masses.
(b) Elements in Mendeleev's periodic table are arranged on the basis of increasing atomic numbers.
(c) In modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass.
(d) In modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group.
What is a group in the periodic table?
Name two elements in each case:
Actinides
Answer the following in respect of element `31/15 P `
To which group and period does it belong?
Give the symbol and valency of the following element and radical.
Bisulphate
Fill in the blank:
The element lithium in the Modern Periodic Table with valency 1+ belongs to the group ______.
State the number of elements in Period 1 of the Periodic Table.
Elements in the modern periodic table are arranged in ______groups and______ periods.
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
