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प्रश्न
Write the radical of the following valency:
Phosphate
पर्याय
1+
2+
3+
1−
2−
3−
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उत्तर
3−
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
Give the names and symbols of five familiar substances which you think are elements.
Fill in the blank:
Symbol represents _____ atom(s) of an element.
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)
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
K1+ Cl1-
Give the symbol of the following element:
Antimony
State the type of element for the following:
Phosphorus
Write the chemical formula of the following:
magnesium sulphate
Give the formula of the following acid:
Hydrochloric
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Iron
write symbol with the variable valency
