Which of the following is not part of dalton's atomic theory?

1 atoms can be broken down into smaller pieces.
2 all atoms of a given element are the same.
3 different elements are made up of different atoms.
4 all matter is made up of atoms.

The answer is 1. Atoms can be broken down into smaller pieces.

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above

43.452

step-by-step explanation:

284 times .153 = 43.452