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Hey guys what is transition contraction? please answer quickly,, please... ​

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Answer:

The d-block CONTRACTION (sometimes called scandide contraction) is a term USED in chemistry to DESCRIBE the effect of having full d orbitals on the PERIOD 4 elements. The elements in question are Ga, Ge, As, Se, BR, and Kr. Their electronic configurations include completely filled d orbitals (d10).



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