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The valence electrons fill in 4d orbital The electron configuration of yttrium is [Kr]4d15s2.
The d sublevel always contains 5 orbitals. Therefore the d sublevel can accommodate 10 electrons just the same as 3d and 4d orbitals. Each of the 5 separate d orbitals can only contain two electrons.
The element is Yttrium, with the symbol Y
there is only 1 lone pair present in BrF5 there are 7 electrons in Br valence shell from which 5 electrons went to make bond with F, while the remaining two makes a lone pair. and thus anly 1 lone pair exist in BrF5
If you are filling in the electrons it will be in the 4d orbital. If you are removing electrons the first to come out is in the 5s electrons since transition metals lose 's' electrons before 'd' electrons
In the fifth period of the periodic table, the atoms of the elements in the first two groups are adding 1 and 2 electrons, respectively, to their highest energy 5s sublevel. Starting in group 3/IIIB and going through group 12/IIB, the atoms of those elements are adding electrons to their highest energy 4d sublevel. Since the d sublevel can contain a maxium of 10 electrons, there are 10 elements whose atoms are filling the 4d sublevel. Once the 4d sublevel is filled, the next higher energy sublevel is the 5p sublevel. Starting with the group 13/IIIA elements, the 5p sublevel is being filled. Since a p sublevel can contain a maximum of 6 electrons, there are six elements whose atoms are filling the 5p sublevel. 5s sublevel filling: 2 elements 4d sublevel filling: 10 elements 5p sublevel filling: 6 elements --------------------------------------- Total: 18 elements For a printable periodic table that includes electron configurations, go to the following link: http://www.nist.gov/pml/data/periodic.cfm
7 Orbitals
The valence electrons fill in 4d orbital The electron configuration of yttrium is [Kr]4d15s2.
The d sublevel always contains 5 orbitals. Therefore the d sublevel can accommodate 10 electrons just the same as 3d and 4d orbitals. Each of the 5 separate d orbitals can only contain two electrons.
Ruthenium has a electron configuration of *[Kr]4d^7 5s^1. It has only one valence electron. Ruthenium is a rare transition metal that belongs with the platinum group on the periodic table.
Niobium (Nb) Because three 4d electrons = 3d^3
The element is Yttrium, with the symbol Y
It goes 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p... it goes according to the principal quantum number, l. the subshells (or energy levels) have corresponding letters... 0th sublevel: s 1st sublevel: p 2nd sublevel: d 3rd sublevel: f 4th: g 5th: h 6th: i etc. usually, we dont use energy levels above the f subshell.
there is only 1 lone pair present in BrF5 there are 7 electrons in Br valence shell from which 5 electrons went to make bond with F, while the remaining two makes a lone pair. and thus anly 1 lone pair exist in BrF5
5
27
10 electrons.