Advertisements
Advertisements
प्रश्न
Write the chemical formula of the following:
Sodium bromide
Advertisements
उत्तर
NaBr
APPEARS IN
संबंधित प्रश्न
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 |
Give a reason why elements are tabulated in a table called the ‘Periodic table’.
Give the symbol of the following element:
Sodium
Give the symbol of the following element:
Aluminium
Give the symbol of the following element:
Phosphate
Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt and O; the element which forms a polyatomic molecule is ________ and which is liquid at room temperature is ________.
State why the molecular formula of zinc carbonate is ZnCO3 .
______ of some elements are derived from Latin or Greek names of the elements.
Name the elements with the following symbols.
- Na
- W
- Ba
- Al
- U
How many elements are known at present?
