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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 |
उत्तर
| Non-Metallic elements | Symbol |
| (a) Carbon | C |
| (b) Chlorine | Cl |
| (c) Oxygen | O |
| (d) Phosphorus | P |
| (e) Hydrogen | H |
| (f) Nitrogen | N |
| (g) Iodine | I |
| (h) Bromine | Br |
| (i) Fluorine | F |
| (j) Silicon | Si |
| (k) Sulphur | S |
संबंधित प्रश्न
A student wants to have 3.011 × 1023 atoms each of magnesium and carbon elements. For this purpose, he will have to weigh :
What do the following symbol stand for?
H2
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
State which element exists in the highest percentage in earth’s crust.
State the type of element for the following:
potassium
State the type of element for the following:
Mercury
Give the symbol of the following element:
Magnesium
Give the formula of the following acid:
Hydrochloric
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).
Zincate
What does the symbol '→' present in a chemical equation, mean?
