Fill in the blanks.

(a) If the valency of carbon is 4 and that of hydrogen is 1 then the molecular formula of methane is ………… .

(b) The gas Helium, is chemically ………… .

(c) There are two electrons in the outermost orbit of the magnesium atom. Hence, the valency of magnesium is ………… .

(d) and ………… are isotopes of chlorine.

(e) Isotopes of uranium are used as ………… in atomic reactors.

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Solution

(a) If the valency of carbon is 4 and that of hydrogen is 1 then the molecular formula of methane is .

(b) The gas Helium, is chemically inert .

(c) There are two electrons in the outermost orbit of the magnesium atom. Hence, the valency of magnesium is two .

(d) and are isotopes of chlorine.

(e) Isotopes of uranium are used as fuel in atomic reactors.

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Similar questions

Complete the following statements :

(a) Magnesium has 2 valence electrons in the ___ shell.

(b) The valency of nitrogen in $N_{2}$ molecule is ___

(d) Some boron atoms have mass number 10 and some have mass number 11. These boron atoms with different mass numbers are called ___

(a) Magnesium has 2 valence electrons in the ............. shell.

(b) The valency of nitrogen in N₂ molecule is .............

(d) Some boron atoms have mass number 10 and some have mass number 11. These boron atoms with different mass numbers are called .............

_{17}^{35} Cl

_{17}^{37} Cl

35.5

x : 1

x

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