$(a)$ Write the chemical formula of sodium sulphate.
$(b)$ Name one element each that forms a diatomic and a tetraatomic molecule.
$(b)$ Name one element each that forms a diatomic and a tetraatomic molecule.
(N/A) The chemical formula of sodium sulphate is $Na_{2}SO_{4}$.
$(b)$ $A$ diatomic molecule consists of two atoms of the same element. Examples include Oxygen $(O_{2})$,Hydrogen $(H_{2})$,or Nitrogen $(N_{2})$. Any one of these can be cited.
$A$ tetraatomic molecule consists of four atoms of the same element. Phosphorus $(P_{4})$ is a common example of a tetraatomic molecule.
$(b)$ $A$ diatomic molecule consists of two atoms of the same element. Examples include Oxygen $(O_{2})$,Hydrogen $(H_{2})$,or Nitrogen $(N_{2})$. Any one of these can be cited.
$A$ tetraatomic molecule consists of four atoms of the same element. Phosphorus $(P_{4})$ is a common example of a tetraatomic molecule.
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Similar Questions
Complete the following crossword puzzle by using the names of the chemical elements based on the data provided in the table.
Across Down $2$. The element used by Rutherford during his $\alpha$-scattering experiment. $1$. $A$ white lustrous metal used for making ornaments and which tends to get tarnished black in the presence of moist air. $3$. An element which forms rust on exposure to moist air. $4$. Both brass and bronze are alloys of this element. $5$. $A$ very reactive non-metal stored under water. $6$. The metal which exists in the liquid state at room temperature. $7$. Zinc metal when treated with dilute hydrochloric acid produces a gas of this element which when tested with a burning splinter produces a pop sound. $8$. An element with the symbol $Pb$.
| Across | Down |
|---|---|
| $2$. The element used by Rutherford during his $\alpha$-scattering experiment. | $1$. $A$ white lustrous metal used for making ornaments and which tends to get tarnished black in the presence of moist air. |
| $3$. An element which forms rust on exposure to moist air. | $4$. Both brass and bronze are alloys of this element. |
| $5$. $A$ very reactive non-metal stored under water. | $6$. The metal which exists in the liquid state at room temperature. |
| $7$. Zinc metal when treated with dilute hydrochloric acid produces a gas of this element which when tested with a burning splinter produces a pop sound. | $8$. An element with the symbol $Pb$. |
What is meant by the following?
$(i)$ Molar mass
$(ii)$ Valency
$(i)$ Molar mass
$(ii)$ Valency
Easy
View Solution$(a)$ In this crossword puzzle (Fig),names of $11$ elements are hidden. Symbols of these are given below. Complete the puzzle.
$1. Cl$
$2. H$
$3. Ar$
$4. O$
$5. Xe$
$6. N$
$7. He$
$8. F$
$9. Kr$
$10. Rn$
$11. Ne$
$(b)$ Identify the total number of inert gases,their names,and symbols from this crossword puzzle.
$1. Cl$
$2. H$
$3. Ar$
$4. O$
$5. Xe$
$6. N$
$7. He$
$8. F$
$9. Kr$
$10. Rn$
$11. Ne$
$(b)$ Identify the total number of inert gases,their names,and symbols from this crossword puzzle.
Medium
View Solution$(a)$ What are molecules? Using examples, differentiate between the molecules of an element and a compound.
$(b)$ Derive the chemical formulae of the molecules formed between the following ions:
$(i)$ $Al^{3+}$ and $SO_{4}^{2-}$
$(ii)$ $Ba^{2+}$ and $NO_{3}^{-}$
$(b)$ Derive the chemical formulae of the molecules formed between the following ions:
$(i)$ $Al^{3+}$ and $SO_{4}^{2-}$
$(ii)$ $Ba^{2+}$ and $NO_{3}^{-}$
Medium
View SolutionCalculate the mass of:
$(a)$ $1$ atom of carbon
$(b)$ $0.02$ mole of sodium
$(c)$ $1$ molecule of water.
$(a)$ $1$ atom of carbon
$(b)$ $0.02$ mole of sodium
$(c)$ $1$ molecule of water.
Difficult
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