Question

iii. In which block, group and period in the periodic table would you place each of the elements with the following electronic configuration?
a. 1s2 , 2s2 , 2p5 b. 1s2 , 2s2 , 2p6 , 3s2

Answer 1

Answer:

If you are given with the atomic number of an element you can find it's period number and group number. The period number is related to the number of electron occupied shells in the element and the period number is linked to its valence electrons.