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Question
Write the chemical formula of the following:
Sodium bromide
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Solution
NaBr
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RELATED QUESTIONS
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
Define: Elements-
Give the names and symbols of five familiar substances which you think are elements.
How are the elements with variable valency named? Explain with an example.
Match the non-metallic elements – with their correct symbols. Non-metallic elements are:
| Non-Metallic elements | Symbol |
| (a) Carbon | (1) O |
| (b) Chlorine | (2) I |
| (c) Oxygen | (3) Si |
| (d) Phosphorus | (4) C |
| (e) Hydrogen | (5) Cl |
| (f) Nitrogen | (6) P |
| (g) Iodine | (7) F |
| (h) Bromine | (8) H |
| (i) Fluorine | (9) S |
| (j) Silicon | (10) Br |
| (k) Sulphur | (11) N |
In the chemical word equation –
Zinc + Sulphuric acid → Zinc sulphate + Hydrogen.
State the reactants and products of the above reaction. What does the arrow indicate?
State the type of element for the following:
Xenon
Fill in the blank with the correct word from the options given below:
A symbol represents a short form of a / an ________.
The symbol of tungsten is _______.
Which of the following symbols of elements are incorrect? Give their correct symbols
- Cobalt CO
- Carbon c
- Aluminium AL
- Helium He
- Sodium So
