how many electrons in an atom may have?
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How many electrons in an atom may have the following quantum numbers? (a) n = 4, (b) n = 3, l = 0. b) When n= 3, l=0 means 3s orbital which can have 2 electrons .
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A 21. How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain? a. 50 protons, 50 electrons, 75 neutrons 120 neutrons, 50 protons, 75 electrons b.
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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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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.
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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.
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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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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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octet rule: Atoms lose, gain, or share electrons in order to have a full valence shell of eight electrons. Hydrogen is an exception because it can hold a maximum of two electrons in its valence level.
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Each orbital can hold 2 electrons (one of each spin), and a maximum of 7 f orbitals can have the same energy without violating Pauli's exclusion principle. The number of electrons in a 4f subshell can be anything between 0 (if it isn't filled) and 14 (2 electrons per orbital times 7 orbitals = 14 electrons).
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That means there are 16 electrons in a sulfur atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and six in shell three. There are 6 electrons in the outer orbit of an atom of sulphur.
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Answer: 32 electrons. Explanation: In N atom, there are 7 electrons.
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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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Atomic number is the number of protons as well as the number of proton is equal to the number of electrons even the carbon atom has 6 electrons.
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The current estimate is that there are 100000000000000000000000000000000000000000000000000000000000000000000000000000000 (that's 1 followed by 80 zeros!) atoms in the universe. Most atoms in the universe are hydrogen, so have 1 proton and 1 electron, so the number of electrons in the universe is probably similar.
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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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So... for the element of BERYLLIUM, you already know that the atomic number tells you the number of electrons. That means there are 4 electrons in a beryllium atom. Looking at the picture, you can see there are two electrons in shell one and two in shell two.
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A neutral atom with atomic number 20 will have 20 electrons. The atomic number is, by definiton, the number of protons in an atom's nucleus but for a neutral atom it's also equal to the number of electrons. Each element has a different, unique number of protons that determines its identity.