how many electrons are in this atom?
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By definition, atoms have no overall electrical charge. That means that there must be a balance between the positively charged protons and the negatively charged electrons. Atoms must have equal numbers of protons and electrons. In our example, an atom of krypton must contain 36 electrons since it contains 36 protons.
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Potassium (K) has 19 total electrons, as indicated by its atomic number (the number of electrons equals the number of protons in a neutral atom).
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So... for the element of OXYGEN, you already know that the atomic number tells you the number of electrons. That means there are 8 electrons in an oxygen atom. Looking at the picture, you can see there are two electrons in shell one and six in shell two.
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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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That means there are 9 electrons in a fluorine atom. Looking at the picture, you can see there are two electrons in shell one and seven in shell two.
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the electronic configuration of the element with atomic number 24 is, 2, 8 , 8 ,6. thus , 8 electrons are present in the M shell of the 24th element.
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So... for the element of CARBON, you already know that the atomic number tells you the number of electrons. That means there are 6 electrons in a carbon atom. Looking at the picture, you can see there are two electrons in shell one and four electrons in shell two.
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If the atomic number is 17, there must be 17 protons and 17 electrons. Starting from the lowest level, we add electrons to each higher level until we have reached 17 electrons. The electron configuration becomes 1s22s22p63s23p5 .
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So... for the element of FLUORINE, you already know that the atomic number tells you the number of electrons. That means there are 9 electrons in a fluorine atom.
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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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Label each shell as n=1, n=2, etc. The first shell holds 2 electrons. We have 18 electrons left.
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How many protons, neutrons, and electrons does the 79 Se 2 ion possess? Answer: 34 protons, 45 neutrons, and 36 electrons Practice Exercise Solution (a) The number of protons (22) is the atomic number of the element.
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How many electrons in 1 newton? The answer is 1.1194131610684E+29.
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A total of 8 electrons can be placed in the outermost shell of an atom. This rule is known as the Octet rule. But there is an exception. Helium, has only two electrons in its outermost shell.
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Answer Expert Verified Then, the number outer-shell d electrons is 4.
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So... for the element of MAGNESIUM, you already know that the atomic number tells you the number of electrons. That means there are 12 electrons in a magnesium atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and two more in shell three.
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Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.