s-orbital
An s orbital is a spherical shape around the nucleus of an atom. It is typically represented as a sphere with the nucleus at the center. The probability of finding an electron in the s orbital is highest at the center and gradually decreases towards the edges of the sphere.
An s orbital is spherical in shape, with a high probability of finding the electron closer to the nucleus.
The orbital configuration for boron is 1s2 2s2 2p1. This means that boron has two electrons in the 1s orbital, two in the 2s orbital, and one in the 2p orbital.
Orbital Notation is a way to show how many electrons are in an orbital for a given element.
It is the orbital velocity (speed and direction) or orbital speed (rate of motion). It is usually stated as "average orbital speed" but is actually "mean orbital speed."
2 electrons (maximum) in the first energy level.
An electron in a 2s orbital is on average closer to the nucleus.
nucleus
Perigee
The 1s orbital.
Yes.
The energy level closest to the nucleus is the 1s orbital and can hold 2 electrons as do all s orbitals. Every electron orbital has a distinct shape and number. The 1s orbital has the same shape the 2s orbital and the 3s orbital and so forth. There are other orbital shapes such as p, d, and f. Regardless of the number or level of the orbital, all p orbitals are the same shape and all d orbitals are the same shape. Orbitals differ in distance from the nucleus and the distance is indicated by the number before the orbital shape.
Because that's how the math works out. It's not a wonderfully satisfying answer, but if you're going to be studying quantum mechanics, get used to it, because it's the answer to a lot of "why" questions in QM. Until you can handle differential equations, you're just going to have to accept that a lot of smart people have worked it out, and that's how it turns out. By the way, it's not technically correct to say 'nearest to the nucleus'. Every s orbital has a local probability maximum at the nucleus. Since every p orbital has a nodal plane containing the nucleus, a 6s electron can get 'nearer' the nucleus than a 2p electron.
1s is a real orbital, specifically the lowest energy orbital in an atom. It is a spherical orbital that is closest to the nucleus and can hold a maximum of 2 electrons.
The 2s orbital and 3s orbital both have the same spherical shape and can hold a maximum of two electrons of opposite spin. They only differ because the 3s orbital is further out from the nucleus than the 2s orbital, thus the 3s orbital has a higher energy value.
an orbital. there are two electrons in each orbital, and groups of orbitals make up shells
The orbital orientations that are possible in each sub level are:S-1p-3d-5f-7