Sc is a 3d element. It has 21 protons and 21 electrons.
Two electrons can occupy the 2s subshell, and 8 electrons can occupy the 3d subshell.
21 protons, 21 electrons and 23 neutrons
None. Zinc fills up its 3d sublevel with 10 electrons, all pairs. So, there are no remaining unpaired electrons
I believe 4s2 is the distinguishing (last) electron
Sc is a 3d element. It has 21 protons and 21 electrons.
Zinc has ten 3d electrons.
3d10 Ten electrons is the maximum number of electron in 3d.
There are a maximum of 10 electrons in the 3d sub-level.
The 3d subshell is completely filled in Arsenic. Therefore it has 10 electrons.
3d^6 Six electrons in the outer shell.
The 3d sub-level has 5 orbitals, and therefore space for a total of 10 electrons. Excluding certain hyper-valent bonding scenarios, the first element with electrons to occupy the 3d sub-level is scandium (Sc).
Two electrons can occupy the 2s subshell, and 8 electrons can occupy the 3d subshell.
10
Potassium (K) is atomic number 19. It has 19 electrons.1s2 2s2 2p6 3s2 3p6 4s1 so it has ZERO 3d electrons. The 3d doesn't receive electrons until you reach scandium (atomic number 21).
Titanium has two electrons in its 3d sublevel.
One Mn atom contains 5 electrons in it's 3d subshell, all of which are unpaired.