Question

લેંથેં નાઇડ ની રચના?

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Answer 1

Answer:

The lanthanide family consists of fifteen metallic elements (from lanthanum to lutetium), all but one of which are f-block elements. The valence electrons of these elements lie in the 4f orbital. Lanthanum, however, is a d-block element with an electronic configuration of [Xe]5d16s2