define 1)s block 2) f block 3) d block 4) p block . shafaque sorry . plzz online time bta do. I love you.
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S block elements
the elements in which the differentiating electron enters into s orbital are called s block elements...
p block elements
the elements in which the differentiating electron enters into p orbital are p block elements..
d block elements
the elements in which differentiating electron enters into (n-1) subshel or penultimate shell are called d block elements..
f block elements
the elements in which differentiating electron enters into anti penultimate shell or (n-2)subshell are called f block elements...
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Answer:
1)Group 1&2
alkali & alkaliearth metals.
2)Inner transition elements
lanthanides & actinides
filled in the order of n-2
3)transition elements
4)column 13-18
35elements
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