HELP MEEE What is the identity of the atom shown?
A) Fluorine
B) Neon
C) Nitrogen
D) Potassium
15 POINTS

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?