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irina [24]
4 years ago
11

COMPOSICIÓN PORCENTUAL

Chemistry
1 answer:
Allisa [31]4 years ago
8 0
Óxido de hierro (lll)
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Carbon and silicon are tetravalent but ge sn pb show di valency. Why
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<u>Answer:</u>

Carbon and silicon both are tetravalent elements as compared to germanium, tin, and lead which are divalent.

That's because Ge, tin, and Pb show inert pair effect and has a greater nuclear effective charge on the 's' electrons due to poor shielding effect.  .That's why these elements are not able to share their valence electrons while carbon and silicon does and show "catenation" which is the ability to form long chain molecules.

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3 years ago
how many milliliters of 1.50 m hno3 contain enough nitric acid to dissolve an old copper penny with a mass of 3.94 g?
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