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प्रश्न
State the valency of the following metallic element and write symbol with the valency
Calcium
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उत्तर
Metals have positive valency 1, 2 or 3,
| Element | Symbol | Valency |
| Calcium | \[\ce{Ca}\] | \[\ce{Ca^2+}\] |
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संबंधित प्रश्न
The English name of an element is potassium, its Latin name will be :
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Chloride
Match the metallic elements – with their correct symbols Metallic elements
| Metallic elements | Symbol |
| (a) Potassium | (1) Ca |
| (b) Sodium | (2) Zn |
| (c) Calcium | (3) Pb |
| (d) Magnesium | (4) Hg |
| (e) Zinc | (5) Cu |
| (f) Aluminum | (6) Au |
| (g) Iron | (7) K |
| (h) Lead | (8) Fe |
| (i) Copper | (9) Al |
| (j) Mercury | (10) Na |
| (k) Silver | (11) Mg |
| (l) Platinum | (12) Pt |
| (m) Gold | (13) Ag |
Match the symbols of – radicals – with their correct combining power or capacity, (valency).
(a) OH
(b) So4
(c) No3
(d) Co3
Combining power or capacity – A : 3; B : 2; C : 1. (negative valencies)
Match the formulas of the following of bases with their correct names.
Bases – (a) NaOH (b) KOH (c) Ca(OH)2 (d) Zn(OH)2
Names – (1) Potassium hydroxide (2) Zinc hydroxide (3) Aluminium hydroxide (4) Calcium hydroxide (5) Sodium hydroxide
Select the correct answer from the choice given below.
The symbol of mercury is
Give the symbol of the following element:
Mercury
State the type of element for the following:
Copper
State the valency of the following metallic element and write symbol with the valency
Zinc
______ of some elements are derived from Latin or Greek names of the elements.
