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Habeeb H Patel
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Iodine and strontiun are reacted together. Explain why it is difficult to predict whether this reaction is more or less reactive than the reaction of bromine with calcium. Can someone help
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Pigster
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What are you thoughts?
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Habeeb H Patel
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(Original post by Pigster)
What are you thoughts?

I actually dont know where to start. I know its about Group 2 and 7. Do you talk about the reactivity with Iodine and Bromine, because they're in group 7 and same with the group 2 metals Strontium and Calcium. Can you give me a model answer
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Pigster
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What do you know about the relative reactivities of the four elements involves?
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Habeeb H Patel
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(Original post by Pigster)
What do you know about the relative reactivities of the four elements involves?
In group 7, iodine and bromine are near the bottom of the group, they're least reactive. In group 2, calcium and strontium are half way down the group, so they have large atomic radius, so its easier for electrons to be removed. Im still unsure and can you please add any additional information
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Pigster
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(Original post by Habeeb H Patel)
In group 7, iodine and bromine are near the bottom of the group, they're least reactive. In group 2, calcium and strontium are half way down the group, so they have large atomic radius, so its easier for electrons to be removed. Im still unsure and can you please add any additional information
I mean what do you know about the reactivities of the two G2 metals relative to each other and the halogens relative to each other.

Then notice the combinations.
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Habeeb H Patel
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(Original post by Pigster)
I mean what do you know about the reactivities of the two G2 metals relative to each other and the halogens relative to each other.

Then notice the combinations.

Ok, so I talk about the two G2 and G7 separately and what do you mean by notice the combinations. Do I talk about the charges
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Pigster
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Which G2 is the more reactive?

Which halogen is the more reactive?
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Habeeb H Patel
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(Original post by Pigster)
Which G2 is the more reactive?

Which halogen is the more reactive?
Strontium for G2 and bromine for G7, what do I do now
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Pigster
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Well... if Sr is the more reactive, its reaction with I2 must be the most reactive combination...
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Habeeb H Patel
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(Original post by Pigster)
Well... if Sr is the more reactive, its reaction with I2 must be the most reactive combination...
OH, but it says why is it difficult to predict whether this reaction is less or more reactive
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Pigster
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(Original post by Habeeb H Patel)
OH, but it says why is it difficult to predict whether this reaction is less or more reactive
Aha. But, what about Br2 being the more reactive halogen?
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Habeeb H Patel
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(Original post by Pigster)
Aha. But, what about Br2 being the more reactive halogen?
Yes you're right. So you cant determine which one's least or most reactive because one equation doesnt have the most reactive G2 element or most reactive G7 element. Is this correct
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Pigster
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(Original post by Habeeb H Patel)
Yes you're right. So you cant determine which one's least or most reactive because one equation doesnt have the most reactive G2 element or most reactive G7 element. Is this correct
w00t
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Habeeb H Patel
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(Original post by Pigster)
w00t
So you're trying to say its hard to tell which reaction is more or least reactive because the halogens and group 2 metals in the equations have different reactivities, so there's not an equation which has the most reactive elements combined together. The elements in the reactions have different reactivities to one another. Is this correct
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Pigster
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Also w00t
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Habeeb H Patel
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(Original post by Pigster)
Also w00t


Can you please give me a model answer, Ive been trying to solve this for the past week
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