Question

Which of the following statements are true?

True False The element with a ground state electron configuration of [Kr]5s²4d¹⁰5p⁵ has 7 valence electrons.

True False The ground state electron configuration for the undiscovered element 117 is [Rn]8s²6f¹⁴7d¹⁰8p⁵.

True False The electron configuration of 1s²2s²2p⁶3s²3p⁶4s¹3d² is an excited state electron configuration for Ti.

True False If an element (abbreviated X) has a ground state electron configuration of [Ne]3s²3p⁴, then the formula of the compound that X forms with sodium is Na₂X.

True False The ground state electron configuration for Cr is [Ar]4s²3d⁴.

True False The element with a ground state electron configuration of 1s²2s²2p⁶3s¹ is an alkali metal.