Reactivity of transition elements decreases


Reactivity of transition elements decreases almost regularly from Sc to Cu. Explain.


Effective nuclear charge increases as we move along the period from left to right. Due to the reason, the size also reduces. Therefore the electrons will be held more

tightly and so that removing of the electron will be difficult from the outermost shell. So that ionization enthalpy also increases. Therefore, reactivity also decreases. Sc is

more reactive than Cu.

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