Explanation:
Here's an oxidation chart to help
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Answer:
<u>Oxidation state of Mn = +4</u>
Explanation:
Atomic mass of Mn = 55g/mol
From Faraday's law of electrolysis,
Electrochemical equivalent = 
i.e Z =
=
= 0.0001424 g/C
But Equivalent weight, E = atomic mass ÷ valency = Z × 96,485
⇒
= 0.0001424 × 96,485
<u>∴ Valency of Mn = +4</u>
Keeps in heat, protects us from radiation, provides oxygen, and protects us from objects coming towards the earth.
Answer:
Elements in the same period have the same (number of electron shells)