Choose the ground state electron configuration for ti 2 ⁺. a. [ar]4s23d4 b. [ar]3d4 c. [ar]4s23d2 d. [ar]4s2 e. [ar]3d2

d. [Ar] 4s²

Explanation:

The ground state electron configuration is the electron configuration of an atom with lower energy levels. The electron configuration for Titanium (Ti) is:

Ti = [Ar] 4s²3d² -By Aufbau principle-

For Ti²⁺, the ground state electron configuration is removing the 3d² electrons.

That means that ground state electron configuration for Ti²⁺ is:

d. [Ar] 4s²

I hope it helps!

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

the answer is   c.) 1575 j.

explanation: