Advertisements
Advertisements
प्रश्न
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Copper
write symbol with the variable valency
उत्तर
Copper: exhibits valency 1 and 2
| \[\ce{Cu^1+}\] | \[\ce{Cu^2+}\] |
| Cuprous | Cupric |
APPEARS IN
संबंधित प्रश्न
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 |
Elements are mainly classified into metals and non-metals. State six properties of metals which differ from non-metals.
Give the symbol of the following element:
Fluorine
State the type of element for the following:
Lead
State what is meant by the term ‘activity series of metals’.
State the valency of the following metallic element and write symbol with the valency
Magnesium
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).
Aluminate
Name three metals whose symbols are derived from the first letter of the name of the element.
