how many electrons are there in the first 20 elements?
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element 1 (hydrogen) has 1 proton, and thus one electron. element 2 (helium) has 2 protons, and thus two electrons. ….. element 20 (calcium) has 20 protons, and thus 20 electrons.
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So... for the element of CHLORINE, you already know that the atomic number tells you the number of electrons. That means there are 17 electrons in a chlorine atom.
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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 element sodium has 12 neutrons, 11 electrons and 11 protons. The number of electrons and protons come from the element's atomic number, which is same 11. The number of neutrons can be found by subtraction of the atomic number from sodium's atomic mass of twenty three.
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Answer and Explanation: Eighteen electrons can have the designation n = 3. There is 3s, 3p, and 3d orbitals.
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The M shell only holds eight electrons. The M shell can actually hold up to 18 electrons as you move to higher atomic numbers.
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In an atom, the electrons spin around the center, also called the nucleus. The electrons like to be in separate shells/orbitals. Shell number one can only hold 2 electrons, shell two can hold 8, and for the first eighteen elements shell three can hold a maximum of eight electrons.
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Answer: 32 electrons. Explanation: In N atom, there are 7 electrons.
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Vanadium atoms have 23 electrons, 28 neutrons and 23 protons.
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Answer and Explanation: Fourteen electrons can be represented by the values n = 4 and l = 3.
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Each principal energy level can contain up to 2n2 electrons, where n is the number of the level. Thus, the first level can contain up to 2 electrons, 2(12) = 2; the second up to 8 electrons, 2(22) = 8; the third up to 18, 2(32) = 18; and so on.
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That means there are 13 electrons in a aluminum atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and three in shell three.
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X atom (means no radical) having 19 electrons will be sure potassium, according to the defination of atomic number. Now, the the valancy of an element is equivalent to the number of electrons present in its outermost shell.
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Tungsten has 74 electrons. This is easy to determine if you look at the Periodic Table of Elements. The atomic number of tungsten is 74.
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Electron "cloud" of orbitals For example, among atoms of iron, all with 26 protons, Fe2+ has 24 electrons and Fe3+ has 23 electrons, whereas elemental (uncharged) Fe has 26 electrons. the mass of an atom is outside the nucleus.
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A calcium atom has 20 protons, 20 electrons and 20 neutrons.
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Copper has two electrons in the innermost shell, eight in the next shell, eighteen in the third shell, and one in the fourth shell. This means that the first three shells each have as many electrons as they can hold, and the fourth shell has one lonely electron. (The fourth shell can hold up to 32 electrons.)