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.
An atom of selenium has 34 electrons.
In its elemental form, selenium typically forms two covalent bonds. Selenium has six valence electrons in its outer shell, so it can share these electrons with other atoms to form two covalent bonds.
If you go to your preferred search engine and search for "lewis dot of Se" you will find it. This is the best I can make on this form....Se:.
Selenium-55 has 34 protons, 21 neutrons, and 34 electrons.
The symbol for a selenium atom gaining two electrons is Se2-.
se and sometimes gain electrons. Atoms with eight valence electrons do not easily lose electrons
The correct Lewis structure for selenium (Se) would have 6 valence electrons represented by the symbol "Se" surrounded by 6 dots or lines (representing valence electrons), giving a total of 12 electrons in the structure.
An atom of selenium has 34 electrons.
In its elemental form, selenium typically forms two covalent bonds. Selenium has six valence electrons in its outer shell, so it can share these electrons with other atoms to form two covalent bonds.
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 is a group 16 element. It has 6 electrons in its valence shell and simply on that basis would be predicted to be divalent. and that is found to be true with compounds such as H2Se, However like sulfur it is capable of other valencies.It can be tetravalent, examples are SeO2 (which is chain polymer) and SeF4.It can also be hexavalent in SeF6, an octahedral molecular compound.And it can appear to be monovalent in for example Se2Cl2 which is actually Cl-Se-Se-Cl.
If you go to your preferred search engine and search for "lewis dot of Se" you will find it. This is the best I can make on this form....Se:.
Selenium (Se) is a solid non-metal element (#34). It has two valence electrons, meaning that it reacts similarly to sulfur and oxygen.
Since Selenium is in the same column as Oxygen and Sulfur, you would expect it to bond just like them. As a halogen, chlorine wants to make one bond so your final answer would be. Cl-Se-Cl with two lone pairs (that's 4 electrons) on selenium and 3 lone pairs (that's six electrons) on EACH chlorine.
Selenium (Se) is a solid non-metal element (#34). It has two valence electrons, meaning that it reacts similarly to sulfur and oxygen.
Selenium-55 has 34 protons, 21 neutrons, and 34 electrons.
Selenium typically forms an ion with a charge of -2 when it gains two electrons to achieve a stable electron configuration. This forms the selenide ion (Se2-).