How many blocks are there in the modern periodic table?, 2, 4, Transition elements are located in which block?, p, d, There 18 horizontal period in the modern periodic table, yes, No, Element Ca 20 is located in period number 4, yes, No, lanthanides and Actinides located in ....plock, f, s, There are ....... groups in S-block, 6, 2, Number of electrons in the outer most energy level indicates..., group number, Period number

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