how are the number of protons and electrons related?
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The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.
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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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Answer Key The number of protons an atom has is called its atomic number, which decides what kind of atom it is. Changes in the number of neutrons make an isotope, and changes to the number of electrons make an ion. (A) They are made up of subatomic particles called protons, electrons and neutrons.
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Atoms of each element contain a characteristic number of protons. In fact, the number of protons determines what atom we are looking at (e.g., all atoms with six protons are carbon atoms); the number of protons in an atom is called the atomic number.
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In a neutral atom the number of protons = the number of electrons. 35 protons = 35 electrons. But Bromine anion with a charge of -1 has one extra electron so 35 +1 = 36 electrons.
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Protons and neutrons have approximately the same mass. However, one proton is about 1,835 times more massive than an electron. Atoms always have an equal number of protons and electrons, and the number of protons and neutrons is usually the same as well.
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Atoms of each element contain a characteristic number of protons. In fact, the number of protons determines what atom we are looking at (e.g., all atoms with six protons are carbon atoms); the number of protons in an atom is called the atomic number. In contrast, the number of neutrons for a given element can vary.
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Atoms always have an equal number of protons and electrons, and the number of protons and neutrons is usually the same as well. Adding a proton to an atom makes a new element, while adding a neutron makes an isotope, or heavier version, of that atom.
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Can an atom have a different number of protons and electrons? Yes. Each element has a specific number of protons that make up it's identity. However, electron count and configuration can change to make bonds, in elemental form, etc.
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Atoms of the same element have the same atomic number so the number of protons (and electrons) are same. But they have same or different mass number (like that for isotopes) . Different mass number will have different number of neutrons.
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The charge on the ion tells you the number of electrons. If the charge is positive, subtract that number from the atomic number to get the number of electrons. You have more protons. If the charge is negative, add the amount of charge to the atomic number to get the number of electrons.
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The atomic number is the number of protons in an atom of an element. ... 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. Electrons are arranged around atoms in a special way.
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If a neutral atom has 1 proton, it must have 1 electron. If a neutral atom has 2 protons, it must have 2 electrons.
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The atomic number of an atom is the number of protons (and usually, the number of electrons) in the atom. The atomic mass of an atom is the total number of protons and neu- trons in the nucleus of the atom.
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In the case of Sulphur the atomic number is 16 - that means the number of protons is 16. An atom always has the same number of protons as electrons so there are 16 electrons also. The difference between the mass number and atomic number (32 - 16) is the number of neutrons so Sulphur has 16 neutrons also.
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The number of protons in an atom of an element is its atomic number . ... all atoms of a given element have the same number of protons. atoms of different elements have different numbers of protons.
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The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). ... The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).