6.
Valence electrons are the electrons in the s and p orbitals. Keeping this in mind, Se has the 4s orbitals filled (2 electrons) and has 4 electrons filled in the 4p orbital (4p4). 2+4 = 6.
Neutral selenium has 34 protons and 34 electrons. Its electron configuration is given as 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4. This configuration has 6 valence electrons, but we're dealing with Se2-, so we need to add two electrons to that, giving us a total of 8 valence electrons.
Se has 6 valence electrons, but if you add the ion Se2- you're going to be gaining 2 electrons, in which you'll have 8 valence electrons.
Selenium has 6 valence electrons.
Selenium has 6 valence electrons.
6 valence electrons
6
An atom of selenium has 34 electrons.
I don't know Se-55.
The element with 34 electrons is selenium. It has an atomic number of 34, which corresponds to the number of electrons in a neutral selenium atom.
The symbol is Se(2-).
The atoms with six valence electrons are the elements of group sixteen. This list includes O, S, Te, Se, and Po. If you would like to answer this yourself, just remember that the last digit of the group number is typically the number of valence electrons that you will have. The exceptions of course are the transitional metals from group 3 to 12 and the lanthanides and actinides like uranium and plutonium. These have 2 valence electrons.
Se2-Se 2-
se and sometimes gain electrons. Atoms with eight valence electrons do not easily lose electrons
An atom of selenium has 34 electrons.
Oxygen has 6 valence electrons, while selenium has 6 valence electrons as well. Both oxygen and selenium are in the same group, Group 16 (also known as Group VIA or Group 6) of the periodic table. They are not in the same period – oxygen is in period 2, while selenium is in period 4.
Selenium (Se) is a solid non-metal element (#34). It has two valence electrons, meaning that it reacts similarly to sulfur and oxygen.
Selenium (Se) is a solid non-metal element (#34). It has two valence electrons, meaning that it reacts similarly to sulfur and oxygen.
I don't know Se-55.
I don't know Se-50.
34Se: [Ar] 4s2 3d10 4p4 34Se: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4 by picture I assume you mean the orbital diagram. This shows the valence electrons around the chemical symbol, which, in this case is "Se". The number of Valence Electrons that Selenium contains is "6", because in the 4th energy level, it contains 6 electrons.
The element with 34 electrons is selenium. It has an atomic number of 34, which corresponds to the number of electrons in a neutral selenium atom.
Selenium (Se) has an atomic number of 34 which means in a balance atom Se will have 34 protons and 34 electrons then Se has a mass of 79 so to get the neutrons we minus the protons from the mass and we get 45 final answer: Neutrons: 45 Protons:34 Electrons: 34
The symbol is Se(2-).