in the future - u will be able to do some more stuff here,,,!! like pat catgirl- i mean um yeah... for now u can only see others's posts :c
Which Option is Correct?
First ionization energy of 5d elements is higher than those of 3d and 4d elements. This
is due to:
(a) Greater effective nuclear charge acting on outer valance electrons.
(b) Greater effective nuclear charge is experienced because of weak shielding of the
nucleus by 4f electrons.
(c) Both (a) and (b)
(d) None of the above
3 - 0
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