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Licemer1 [7]
3 years ago
14

Elements are arranged by their properties on the periodic table. Arranged by their properties?

Chemistry
1 answer:
vichka [17]3 years ago
3 0
Properties like atomic number, valency etc...
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Mg (s)       +    HCl (aq)    →  MgCl₂(s)   + H₂(g)

Looking at the equation :

We have 1 Mg at the left hand side and 1 Mg as well on the right hand side.
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We have 1 H at the left hand side and 2 H on the right hand side.
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We add 2 to the HCl on the left hand side and that balances it.

Mg(s)       +    2HCl(aq)    →  MgCl₂(s)  + H₂(g)
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