In niels bohr’s model of the atom, electrons move a. like balls rolling down a hill. b. like planets orbiting the sun. c. like popcorn in a popcorn popper. d. like beach balls on water waves.

In Niels Bohr's model of the atom, electrons move b. like planets orbiting the sun

According to the Bohr atomic model, electrons circulate around the nucleus on a particular path, so that electrons are not attracted to the nucleus. This path is called the electron shell or energy level, where the path is closest to the nucleus has the lowest energy

Although this atomic model has a disadvantage in describing the trajectory of electrons for atoms that have more electrons (can only predict Hydrogen atoms) but succeeded in explaining the weaknesses of the Rutherford atomic model. The main weakness of the Rutherford atomic model is that Rutherford cannot explain why negatively charged electrons are not attracted to the nucleus of an atom that has positively charged particles

Both of these models (Rutherford and Bohr) are now refined with the atomic theory of quantum mechanics

So the Bohr atomic model can explain the spectrum of hydrogen atoms (energy absorbed/ emitted during electron transitions) whether it is absorption or emission of energy when compared to the Rutherford atomic model

Rutherford experiment

link

Bohr's model of the atom

link

The subatomic particle

link

Keywords: Bohr atomic model, Rutherford, quantum mechanics

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of carbon is as shown here in the image.

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.