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प्रश्न
Give the formula of the following gas:
Nitrous oxide
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उत्तर
Nitrous oxide – N2O
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संबंधित प्रश्न
Which particular atom of the above element is used for this purpose ?
Write the full form of IUPAC. Name the elements represented by the following symbols:
Au, Pb, Sn, Hg
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
Elements are mainly classified into metals and non-metals. State six properties of metals which differ from non-metals.
State the type of element for the following:
Arsenic
Write the radical of the following valency:
Nitrate
Write the chemical formula of the following:
Sodium bromide
Write the chemical formula of the following:
calcium sulphide
Define the term ‘valency’.
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
