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Chemistry
5. Periodic Classification of Elements
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Q19 of 52 Page 38

What type of oxide would Eka–aluminium form?

Aluminum (Al) has the oxidation state: +3. It can form Al3+ as it has valency of +3. So it will form Al₂ O₃.

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17

Arrange the following elements in the order of their decreasing metallic character: Na, Si, Cl, Mg, Al

18

Arrange the following elements in the order of their increasing nonmetallic character: Li, O, C, Be, F

20

Three elements B, Si and Ge are

21

Which of the following elements will form an acidic oxide?

Questions · 52
5. Periodic Classification of Elements
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