how many outer shell electrons in selenium?
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Selenium Valence Electrons Selenium has 6 electrons in its outermost shell i.e. 2 electrons in s orbit and 4 electrons in the p orbit.
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-Nitrogen has five electrons in its outer energy shell.
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In K, L,M, N shells,in the N shell it can accommodate 32 electrons. So why the outermost shell can accommodate only 8 shells?
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The Group 6A elements have six valence electrons in their highest-energy orbitals (ns2np4). This is only two electrons away from having a full octet of eight electrons, so many of these elements form anions having -2 charges: oxide, O2-; sulfide, S2-, selenide, Se2-, etc.
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Noble gases have eight electrons in their outermost shell, except in the case of helium, which has two.
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Answer Expert Verified Then, the number outer-shell d electrons is 4.
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How many electrons would be present in the valence shell of a sulfur atom (atomic number 16, mass number 32)? An atom of sulfur would have 16 electrons, with 2 electrons in the innermost electron shell, 8 electrons in the next electron shell, and 6 electrons in the outermost or valence shell.
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So we get 2 + 5 = 7. So fluorine has 7 electrons in the outermost shell. Basically, count the number of electrons in the orbitals with the highest principle quantum number, and that'll give the number of electrons in the outermost shell.
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The fourth shell has 4 subshells: the s subshell, which has 1 orbital with 2 electrons, the p subshell, which has 3 orbitals with 6 electrons, the d subshell, which has 5 orbitals with 10 electrons, and the f subshell, which has 7 orbitals with 14 electrons, for a total of 16 orbitals and 32 electrons.
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The shell closest to the nucleus, 1n, can hold two electrons, while the next shell, 2n, can hold eight, and the third shell, 3n, can hold up to eighteen. The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms.
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In general, the first shell can hold 2 electrons, the second can hold 8. Consequently, hydrogen only has 1 outer shell as it has less than 2 electrons so it does not need another shell.
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The shell closest to the nucleus, 1n, can hold two electrons, while the next shell, 2n, can hold eight, and the third shell, 3n, can hold up to eighteen. ... This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.
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Selenium atoms have 34 electrons and the shell structure is 2.8. 18.6. The ground state electron configuration of ground state gaseous neutral selenium is [Ar].
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Fluorine (F) and chlorine (Cl), as group 17 elements, have seven electrons in their outermost shells. They tend to achieve a stable octet by taking an electron from other atoms, becoming negatively charged ions: F− and Cl−. Carbon (C), as a group 14 element, has four electrons in its outer shell.
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Neon, like all noble gases, has a full valence shell. Noble gases have eight electrons in their outermost shell, except in the case of helium, which has two.
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So... for the element of SILICON, you already know that the atomic number tells you the number of electrons. That means there are 14 electrons in a silicon atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and four in shell three.
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The Group 7 elements - fluorine (F), chlorine (Cl), bromine (Br), iodine (I) and astatine (At) - have seven electrons in the outer shell.