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It will be AChemistry , Nov03 no.36
As the question asks for Unsaturated so B & D are not an option as they are saturated
& then it says it forms a neutral solution so it cannot be C as it's an acid
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It will be AChemistry , Nov03 no.36
Unstaurated compounds are those having double bonds in them so it is either A or C..Chemistry , Nov03 no.36
what is the percentage of oxygen in air? 20%Thanks Skynox too ,
Juno4 no.29 please , Why the answer is 150 ?
Assalam-o-alaikum wr wb..Student 1 is correct because Look for example in the periodic Table at Sodium and potassium they are under each other right ? so the difference between them is 8 PROTONS (atomic number ) and ELECTRONS IS EQUAL TO PROTONS IN AN ATOM so K has 8 more electrons than Na , so he is right they are both K and Na in the same group (as an example ). Student 2 said it is unreactive he is wrong because both Na and K are reactive , and could form ionic compounds . That's what I believe , does that make sense to you ???
wa alaikum al salam wr wbAssalam-o-alaikum wr wb..
well the question says which student "can" be correct...
which means that IF atom X is argon...atom Y will be Krypton....it shows that both "CAN" be correct as argon and krypton are unreactive!
sorry i didn't notice that b4 well in that case take Neon and Argon...they have a difference of 8 protons!wa alaikum al salam wr wb
Yeah but count for me the proton number for argon and krypton and see the difference between the proton ( atomic number ) which when AN ATOMIC NUMBER OF ELECTRON EQUALS PROTONS , it will have a difference of 18 . but between K and Na is a difference of 8 ,which K has 8 more electrons than Na . and both are in the same group and reactive , and can form ionic bonds with non metals for example .
Then why B is not right ????sorry i didn't notice that b4 well in that case take Neon and Argon...they have a difference of 8 protons!
(argon and krypton have a difference of more than 8 bcoz the transitional elements fall between them)
It's A .Atom X has 8 more electrons than atom Y.
Student 1 says they are in the same group.
Student 2 says they are unreactive.
Which students can be correct?
student 1 student 2
A yes yes
B yes no
C no yes
D no no
I don't get the question so that i will solve it
bcoz student 2 is correct 'too'...i mean it can even be unreactive...(as i gave you the example of Neon and argon)Then why B is not right ????
So he wants both students correct by saying ' who can be correct ' as both possibly can be correct .... I understood , rabna yostor .bcoz student 2 is correct 'too'...i mean it can even be unreactive...(as i gave you the example of Neon and argon)
the file isn't opening..Can anyone explain why the answer is A ?
yeahp =DSo he wants both students correct by saying ' who can be correct ' as both possibly can be correct .... I understood , rabna yostor .
the answer is DNov06 no.15 .
i don't have the paper, but anyways i did the same question in another paper that was in the 2000s, and the graph in B was the answer.
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