which is the ground-state electron configuration forchromium? a. [Ar] 3d^4s^2 b.

Question

which is the ground-state electron configuration forchromium? a. [Ar] 3d^4s^2     b. [Ar] 3d^34s^3   c. [Ar] 3d^24s^4    d. [Ar]3d^54s^1 the outer electron configuration of the alkali metalshas: a. 1 electron in the s orbital b. 2 electrons in the sorbital c. 1 electron in the p orbital   d.2electrons in p                                                                                                                                           orbital number of orbials for the d sublevel is a.1 b.3 c.5   d.7 which is the ground-state electron configuration forchromium? a. [Ar] 3d^4s^2     b. [Ar] 3d^34s^3   c. [Ar] 3d^24s^4    d. [Ar]3d^54s^1 the outer electron configuration of the alkali metalshas: a. 1 electron in the s orbital b. 2 electrons in the sorbital c. 1 electron in the p orbital   d.2electrons in p                                                                                                                                           orbital number of orbials for the d sublevel is a.1 b.3 c.5   d.7

Explanation / Answer

1) d (1 s-electron is promoted to completely fill the dsubshell) 2) a 3) c

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