Choose all the answers that apply. Argon (Ar) is in group 18. Argon .
1. is part of the noble gas group
2. has 18 electron shells
3. does not react readily with other elements
4. has properties similar to other elements in group 18
5. forms a salt when combined with a metal

Time remaining 58: 10 an atom that has 84 protons and 86 neutrons undergoes a reaction. at the end of the reaction, it has 82 protons and 84 neutrons. what happened to the atom? it accepted radiation in a chemical reaction it donated neutrons to another atom in a chemical reaction it emitted an alpha particle in a nuclear reaction. it accepted protons in a nuclear reaction. mark this and retum save and exit next submit