Question

The decimal expansion of 129/ 2square 5 ( 7) 7 ( 5)
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Answer 1

Answer:

বয়েলের আইন? 91 বি 49ro'rmdpddoeoeo

Answer 2

Answer:

why do transition elements exhibit variable oxidation States??

transition elements or d block elements show variable valency or oxidation States by one or more of the inner d electrons along with the electrons of valence shell, in bond formation.

this is because the energy required for the removal of inner d electrons is almost the same as the energy required for the removal of valence electrons.