Question

1. choose the best answer.

the work of schrödinger and heisenberg helped form the
plum pudding model of the atom
cloud model of the atom
bohr model of the atom
planetary model of the atom

1. drag and drop the labels with the descriptions of an element.

label 1 8 15.999 label 3
label 2 o
oxygen
choices
atomic mass
atomic number
element symbol

Explanation:

7.

Schrödinger and Heisenberg's work was crucial in the development of quantum - mechanics based atomic models. The cloud model of the atom is based on quantum mechanics, where electrons are described as existing in a probability cloud around the nucleus. The plum - pudding model was by Thomson, the Bohr model by Bohr, and the planetary model is an early and more simplistic view similar to Bohr's.

The atomic number is the number of protons in an atom's nucleus. The atomic mass is the average mass of an atom of an element, taking into account its isotopes. The element symbol is a one - or two - letter abbreviation for the element. For oxygen, 8 is the atomic number, 15.999 is the atomic mass, and O is the element symbol.

Answer:

cloud model of the atom

8.