According to the table below, which two atoms have the same mass number?
1 point
Atom
Photons
Neutrons
Electrons
1
8
10
8
2
10
9
10
3
9
9
9
4
8
8
Atoms 2 and 3
Atoms 1 and 2
Atoms 1 and 4
Atoms 2 and 4

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.

it is a solid

explanation: