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प्रश्न
State the valency of the following metallic element and write symbol with the valency
Aluminium
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उत्तर
Metals have positive valency 1, 2 or 3,
| Element | Symbol | Valency |
| Aluminium | \[\ce{Al}\] | \[\ce{Al^3+}\] |
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संबंधित प्रश्न
What do the following symbol stand for?
H2
An atom of an element is denoted by a “symbol” Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Helium by ‘He’
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
Give the symbol of the following element:
Fluorine
State the type of element for the following:
Arsenic
Write the radical of the following valency:
Calcium
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Lead
write symbol with the variable valency
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
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).
Sulphide
Fill in the blank with the correct word from the options given below:
A symbol represents a short form of a / an ________.
