Question

If Aufbau rule is not followed, K - 19 will
placed in the block
1) s 2)p 3)d 4)f
20. Which of the following have the same numbe
of electrons in outermost shell?
1) Elements with atomic numbers 30. 48.80
2) Elements with atomic numbers 14, 15, 16​

Answer 1

"2" (and any subsequent words) was ignored because we limit queries to 32 words.

Answer 2

Answer:

answer for the first one the option is (3)

20(.2)silicon(si), phosphorus (P),sulphur(S)

20. (1) i dont know sorry