which statement about schrödinger’s theory of the atomic model is true? a.  it proved that the nucleus of an atom is positively charged. b.  it was the first theory to discuss the existence of electrons. c.  it explained the odds of finding the position of an electron. d.  it assumed the electron cloud to be heavier than the nucleus.

C. It explained the odds of finding the position of an electron.

Explanation:

Schrödinger discovered the wave equation of electron. Electrons show wave particle duality.  Electrons exist as electron cloud in three dimensional space. Therefore it is difficult to state the precise position of an electron. There is a probability that electrons can be in one place at a time and an equal probability that an electron can be at another place at another time. This is based on Schrödinger thought experiment of a cat in a box.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

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