C-04-Q067: The element with configuration $1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 4s^2$ be…

C-04-Q067: The element with configuration $1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 4s^2$ be… | প্রশ্ন করি

The element with configuration 1s22s22p63s23p63d24s21s^2 2s^2 2p^6 3s^2 3p^6 3d^2 4s^21s22s22p63s23p63d24s2 belongs to—