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kondaur [170]
3 years ago
8

Photosynthesis transfers electrons from water to carbon dioxide molecules. Why is this electron transfer called an oxidation red

uction process?
Chemistry
1 answer:
Misha Larkins [42]3 years ago
4 0
Oxidation is the Loss of Electrons, and Reduction is the Gain of Electrons
(Remember oil rig - Oxidation Is Loss, Reduction Is Gain)

Since water loses an electron, it gets oxidised, and since carbon dioxide gains an electron, it gets reduced. 
Since both oxidation and reduction occurs, it is called a Redox reaction
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Why do reactivity increases on moving from top to bottom in group 2 of modern periodic table?
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Answer:

that's because....

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they can achieve that by just losing one electron from their outer shell.

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so its easier for potassuim to lose one electron than for lithuim.

so that means potassium will easily give up 1 electron to react with non metal or other element therefore it is more reactive than lithuim

but in case of non metal, the opposite happens but simple to understand.

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as florine is more smaller in size than clorine it is more reactive because florine has more tendency to pull extra electron from metal or other element towards its side. so it easily gain 1 electron to react.

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