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weqwewe [10]
3 years ago
10

How do u get the formulae for sodium oxide​

Chemistry
2 answers:
Maslowich3 years ago
5 0

Answer:

The Chemical formula of sodium is Na.

The Chemical formula of oxide is O.

Explanation:

Therefore we know that the term 'valency' is called as the combining capacity of an atom of an element.

So by taking the valency of Sodium and  Oxide, we get  

Sodium with valency '1' and Oxide with valency '2'.

Na         O

1             2

When you cross over you get 'Na2O' as the formula for sodium oxide.

Hope this is helpful for you!

Don't forget to rate or give brainliest answer.!!

TY.

lesya [120]3 years ago
5 0

Answer:

The formula is gotten by exchange of valency between Na and O

Explanation:

To obtain the formula of a compound form by two elements, we must bear in mind their valency

Sodium(Na) has 1 valency

Oxygen(O) has 2 valency

For Na and O to form compound, they will exchange their valency i.e Na will give O is 1 valency and O will give Na it's 2 valency as shown below

Na + O —> Na2O

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9474 millimeters to centimeters using scientific notation showing work
puteri [66]

Answer:

9.474 x 10^2

Explanation:

ok. first you have to get the value in the required unit so 9474mm/(10mm/cm) = 947.4 so scientific notation states that the number must be raised to any power of an integer and the value of the number being raised must be less than than 10 and more than or equal to 1

so it must have one digit in front so.. 947.4 becomes 9.474 and because you move 2 places to the left, ur power is positive 2

and proof 10^2 is 100 so multiply 9.474 by 100 and u will get 947.4 cm which is also 9474 mm

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