Question

What contribution to atomic theory resulted from Albert Einstein's work?

O A. A new understanding that the nucleus contained protons and
neutrons
O B. A new understanding of what caused some elements to be
radioactive
O C. The discovery that different numbers of neutrons produced
isotopes
OD. A new model of the atom that described electrons as being in a
cloi

Answer 1

a new model of the atom that describe electrons as being in a cloud

Step-by-step explanation: