how many electrons are in the highest occupied energy level of barium?
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a. Barium has atomic number fifty six and has fifty six electrons. Place fifty six electrons in the orbitals by obeying the Aufbau principle, Pauli exclusion principle and Hund's rule.
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A principal energy level may contain up to 2n2 electrons, with n being the number of each level. The first energy level can contain 2(1)2 or two electrons; the second can contain up to 2(2)2 or eight electrons; the third can contain up to 2(3)2 or 18 electrons, and so on.
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As you know, an element's valence electrons are simply the electrons located on the outermost energy level, i.e. on the highest occupied energy level. Therefore, you can say that an element located in group 5A has 5 electrons on its highest occupied energy level.
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1. There are 4 protons, 5 neutrons, and 4 electrons. This is a neutral beryllium atom. There are 6 protons in accordance with the proton number in the subscript.
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Barium is a chemical element with the symbol Ba and atomic number 56. It is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Because of its high chemical reactivity, barium is never found in nature as a free element. ... Barium has few industrial applications.
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Lithium has 3 electrons --- 2 in the first shell, and 1 in the second shell (so one valence electron). Beryllim has 4 electrons --- 2 in the first shell, and 2 in the second shell (so two valence electrons). Boron has 5 electrons --- 2 in the first shell, and 3 in the second shell (so three valence electrons).
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Helium has 2 electrons --- both in the first shell (so two valence electrons). Lithium has 3 electrons --- 2 in the first shell, and 1 in the second shell (so one valence electron). Beryllim has 4 electrons --- 2 in the first shell, and 2 in the second shell (so two valence electrons).
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Answer and Explanation: A barium (Ba) atom has 2 valence electrons. Valence electrons are the outermost electrons in an atom, which affect how atoms might react with one...
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The fourth and higher levels also have an f sublevel, containing seven f orbitals, which can hold a maximum of 14 electrons. Thus, the fourth level can hold up to 32 electrons: 2 in the s orbital, 6 in the three p orbitals, 10 in the five d orbitals, and 14 in the seven f orbitals.
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There are 2 electrons on the first energy level, 8 electrons on the second level, 8 electrons on the third energy level, and 1 on the fourth energy level.
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BRIAN M. The fourth energy level has 18 electrons. The fourth energy level of the periodic table includes the 4s 3d and 4p orbitals.
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The first principal energy level contains only an s sublevel; therefore, it can hold a maximum of two electrons. Each principal energy level above the first contains one s orbital and three p orbitals. A set of three p orbitals, called the p sublevel, can hold a maximum of six electrons.
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There can be two electrons in one orbital maximum. The s sublevel has just one orbital, so can contain 2 electrons max. The p sublevel has 3 orbitals, so can contain 6 electrons max. The d sublevel has 5 orbitals, so can contain 10 electrons max.
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Barium: properties of free atoms. Barium atoms have 56 electrons and the shell structure is 2.8.
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The lowest energy level (the K shell) can only be occupied by two electrons, the L shell by 8 and the M shell by 18. The K shell electrons are closest to the nucleus. ... Electrons can't have whatever energy values they want, and each value is associated with a specific orbit trajectory.
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The s sublevel has just one orbital, so can contain 2 electrons max. The p sublevel has 3 orbitals, so can contain 6 electrons max. The d sublevel has 5 orbitals, so can contain 10 electrons max. And the 4 sublevel has 7 orbitals, so can contain 14 electrons max.
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Valence electrons are the electrons in the highest energy level or outer shell and increase in number as you go left to right for the representative elements. However, the transition metals usually have one or two valence electrons.