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The 2d sub energy level does not exist. The first shell to contain a d sub-shell is the third shell: the 3d sub-shell contains a maximum of 10 electrons, with two electrons in each of five different d orbitals.
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the answer is 6
The orbit or electron shell closest to the nucleus is the 1s sub-shell. It can hold 2 electrons before the 2s sub-shell is filled. H and He have their electrons in this shell (the 1s)
2 electrons.
2. The S sub-shell has one orbital and an orbital can hold a max of 2 electrons.
The maximum number of electrons in a 'D' sublevel is 10
There are 7 Energy Levels of electrons called shells, and there are 4 sub-shellsnamed as sub-shells s, p, d, and f. They are ordered as 1s - 2s - 2p - 3s- 3p - 4s - 3d - 4p - 5s- 4d - 5p - 6s - 4f - 5d - 6p - 7s - 5f - 6d - 7p - 6f - 7d - 7f. "s" sub-shells consists of 2 electrons, "p" sub-shells consists of 6 electrons, "d" sub-shells consists of 10 electrons, and "f" sub-shells consists of 14 electrons. The first shell has 2 electrons, the second shell has 8 electrons, the third shell has 18 electrons, the fourth shell has 32 electrons, the fifth shell has 50 electrons, the sixth shell has 72 electrons, and the seventh and last shell has 98 electrons. Oh!!! By the way, the formation of the energy levels is like the solar system. The sun is the nucleus and the proton while the Planets are the electrons. There are seven orbits and each orbit has its own electron count. I mentioned it earlier in this answer of mine.
There are a maximum of 10 electrons in the 3d sub-level.
A number of electrons.
What exactly did you intend to ask? Actually there can be only 2 electrons on one orbital of any level and any type. It's according to Pauli concept (no any two electrons can have the same all four quantum numbers, and these numbers are determining the level, sublevel, orbital position and the spin of electron(which can be whether 1/2 or -1/2, so that only two electrons can occupie the same orbital, no matter, which)).
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