Advertisements
Advertisements
प्रश्न
Name three metals whose symbols are derived from the first letter of the name of the element.
Advertisements
उत्तर
Elements whose symbols are derived from the first letter of the name of the element:
- Carbon - C
- Sulphur - S
- Oxygen - O
APPEARS IN
संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
Select elements and compounds from the following list: Iron, plaster of paris, chalk, common salt, copper, aluminium, calcium oxide, cane sugar, carbon, silica, sodium sulphate, uranium, potassium carbonate, silver, carbon dioxide.
What do the following symbol stand for?
2H
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Oxide
Match the formulas of the following of acids with their correct names:
Acids – (a) HCI (b) HNO3 (c) H2SO4 (d) H2CO3
Names – (1) Carbonic acid (2) Sulphuric acid (3) Hydrochloric acid (4) Nitric acid
Select the correct answer from the choice given below.
The type of element-phosphorus
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Nitrate
What does the symbol '(s)' present in a chemical equation, mean?
Name the elements with the following symbols.
- Na
- W
- Ba
- Al
- U
Write a note on Greem symbols.
