Polyatomic ions such as ammonium ions and nitrate ions are ions that consist of

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.

thats a little if u want the answer just look it up on google thats what i do haha : )

c. orbital shape i hope this is correct