How many comp...

Question

How many compounds are formed by covalency?
$K C l, N a C l, C s C l, O_{2}, N_{2}, C O_{2}, B a O, C a C l_{2}, H_{2} O$

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Solution

The correct option is C 4
$O_{2}$ , $N_{2}$ , ${C O}_{2}$ , $H_{2} O$ are formed by sharing of electrons i.e covalency.

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How many compounds are formed by electrovalency?

$K C l, N a C l, C s C l, O_{2}, N_{2}, C O_{2}, B a O, C a C l_{2}, H_{2} O$

How many covalent bonds are present in the following compounds?

(i) $C O_{2}$

(ii) $H_{2} O$

(iii) $C H_{4}$

(iv) $N_{2}$

(v) $N H_{3}$

How many covalent bonds are formed in $C l_{2,} O_{2}$ and $N_{2}$ molecules?

Balance the following chemical equation.

$N a + O_{2} \to N a_{2} O$

$C a + N_{2} \to C a_{3} N_{2}$

$N_{2} + H_{2} \to N H_{3}$

$C a C O_{3} + H C l \to C a C l_{2} + C O_{2} + H_{2} O$

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C_{3} H_{8}

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O_{2}

C O_{2}

H_{2} O

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