Question

Easy way to learn atomic number of first 30 elements

Answer 1

Answer:

yfyfj

governments and 598667th 085i

Answer 2

Answer:

Remember only atomic numbers of first period for s and p block, then add into them 2,8,8,18,18...from first element to last.

for d block, remember sequence of first series and atomic number of scandium which is increase 21 to 30 of zinc...