Question

Correct the following statements:
1. An element is represented by molecular formula.
2. Co and CO both represents carbon monoxide.

Answer 1

Answer:

Explanation:

1.An element is represented by it's symbol.

Example -

>>Hydrogen - H

>>Zinc - Zn

2.Co and CO both don't represent carbon monoxide

CO represents carbon monoxide.

*An element is always represented by its symbol

**Symbols were introduced by John Berzelius

***Rules while writing symbols ...

>> A symbol can have either one or two letters of English

>>The first letter of the symbol is always uppercase and the second letter is always lower case

>>Some elements may get symbols from their Latin names

Ex - Sodium -Na

Answer 2

$\Huge{\underline{\underline{\red{\mathfrak{Answer :}}}}}$

Question 1) : An element is represented by molecular formula .

Correct :

${ \rm{An \: element \: is \: represented \: by}} \: \rm \underline{\blue{Symbol}}.$

An element is represented by it's symbol. Every element in periodic table is given their different Symbols, To identity elements.

Example :

• Hydrogen is represented by H.
• Helium is represented by He.

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Question 2) : Co and CO both represent Carbon Monoxide.

Correct :

$\rm \underline{\blue{CO}} \: represent \: Carbon \: Monoxide.$

C is symbol for Carbon,

O is symbol for Oxygen.

As, Corbon and Oxygen forms Carbon Monoxide. So, correct is CO

Reaction :

2C (carbon) + O2(Oxygen) = 2CO(Carbon Monoxide)

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