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प्रश्न
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Phosphate
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उत्तर
Phosphate - M(PO4)
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संबंधित प्रश्न
The English name of an element is potassium, its Latin name will be :
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.
Hydrogen by ‘H’
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
State the type of element for the following:
Calcium
Write the radical of the following valency:
Sulphite
Write the radical of the following valency:
Oxygen
Write the chemical formula of the following:
calcium sulphide
Write the chemical formula of the following:
magnesium sulphate
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Tin
write symbol with the variable valency
