Exactly what it says.
The precise location of an electron cannot be ascertained. The best that can be done is to calculate probabilities that it is found within various locations.
The 1s orbital.
in the third shell, an electron has more energy and is further from the nucleus
To the extent that I can make any sense of the question: Yes, the probability function for an s orbital is spherically symmetric and dependent on radial distance only.
shell
The mass of a neutron is approx 1837 times that of an electron. The mass of a proton is similar to that of a neutron. In the simplest atom, hydrogen, the mass of the nucleus is 1,837 times that of an electron. In the largest known atom, that of ununoctium, containing 281 baryons (neutrons or protons) the mass of the nucleus is approx 516,200 times that of an electron. So take your pick: 1,837 to 516,200.
The electron cloud is a volume of space around an atomic nucleus. It comprises of a space of probability. It is the volume of space where electrons can "probably" be found, or have a probability of being found.
Around the atomic nucleus, on electron shells.
Electrons orbit the nucleus of an atom. The exact location of a specific electron, however, can not be known for certain. The general area where the electron might be found is in its orbital.
It would not depend on the direction with respect to the nucleus. The direction of the electron has no effect on the distance of the electron from the nucleus.
Electrons are found in the electron cloud that surrounds the nucleus.
There are three atomic particles, the neutron, the proton and the electron. The proton and neutron are located in the nucleus, leaving the electron to orbit the nucleus in a probability cloud.
Direction with respect to the nucleus
the distance from the nucleus at which the electron is most likely to be found
The electron is the sub-atomic particle that orbits the nucleus of an atom of matter. For anti-matter the sub-atomic particle that orbits the nucleus is the anti-electron (positron).
the electron cloud
The location of an electron is circling the outside of an atom.
NON-POLAR BONDING results when two identical non-metals equally share electrons between them.