which of the following elements are unstable helium,carbon,argon answer quickly
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carbon is unstable while helium and argon are noble gases. Carbon don't have it's valance shell that is last shell complete I.e. not fully filled octet. thus it's unstable
dharam1234:
state reason also. why it is unstable
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Hi there !!
-->Carbon is the element which is unstable here.
-->This is because its shells are not filled.
-->Its atomic no: is 6.
--> No : of electrons is also 6.
-->Its electronic configuration is 2 ,4
-->Thus it needs to lose 4 electrons to combine with another element
-->Its valency is 4
--->Therefore it is unstable
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On the other hand , helium and argon are noble gases , whose shells are filled and both of them have valency 0.
-->Carbon is the element which is unstable here.
-->This is because its shells are not filled.
-->Its atomic no: is 6.
--> No : of electrons is also 6.
-->Its electronic configuration is 2 ,4
-->Thus it needs to lose 4 electrons to combine with another element
-->Its valency is 4
--->Therefore it is unstable
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On the other hand , helium and argon are noble gases , whose shells are filled and both of them have valency 0.
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i never heard of it
nothing like that was there when i was in class 9
now which class r u
12
ok bro
answer for my another questio i pose if u know
sis
not bro
oh kk
do u know answer i had posted another question answer that sis
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