Which of the following general configuration of outermost shell represents chromium [Cr's atomic number = 24]?

Which of the following general configuration of outermost shell represents chromium element? [Cr atomic number = 24]

Which of the following electronic configuration in the outermost shell is characterstic of alkali metals?

Which of the following electronic configuration in the outermost shell is characteristic of alkali metals?

Which is the electronic configuration of the outermost shell of group 16 elements?

Which of the following have the same number of electrons in outermost shell?

Which of the following represents the electronic configuration of an element with atomic number 17