what is the atomic number of element?
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The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus.
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Atomic Number and Mass Number. ... Thus, the atomic number, which is the number of protons in the nucleus of the atom, identifies the element. Because an atom usually has the same number of electrons as protons, the atomic number identifies the usual number of electrons as well.
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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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Go to the Periodic Table of Elements and click on your element. If it makes things easier, you can select your element from an alphabetical listing. The atomic number is the number of protons in an atom of an element.
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In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).
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The atomic number is the number of protons in an atom of an element. ... 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.
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If an element has 43 protons and 50 neutrons, its atomic number is 43. The element whose atomic number is 43 is technetium, or Tc.
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The atomic number of an atom is the number of protons it contains. ... All the atoms of a particular element have the same atomic number. You just studied 6 terms!
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Atomic number is equal to the number of protons and number of electrons in the nucleus . Mass no is equal to the sum of the number of protons and neutrons in the nucleus of an atom.
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The atomic numbers are listed along with the names and symbols of the elements on the inside cover of the text. The atomic number equals the charge on the nucleus. It therefore also equals the number of protons in the nucleus and also equals numerically the number of electrons in the neutral atom.
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Neutral atoms of an element contain an equal number of protons and electrons. The number of protons determines an element's atomic number (Z) and distinguishes one element from another. For example, carbon's atomic number (Z) is 6 because it has 6 protons.
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Atomic number An element and its place within the periodic table are derived from this concept. When an atom is generally electrically neutral, the atomic number will equal the number of electrons in the atom, which can be found around the core. These electrons mainly determine the chemical behaviour of an atom.
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The atomic mass of an element is the total number of protons and neutrons in the nucleus of the atom. The mass number is used to calculate the number of neutrons & electrons in one atom of an element. In order to calculate the number of neutrons you must subtract the atomic number from the atomic mass.
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The two words are synonymous, so if you're looking for the number of atoms in an element, the answer is always one, and only one. Scientists know of 118 different elements, which they categorize in the periodic table, a diagram that arranges them in increasing order according to the number of protons in their nuclei.
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Answer and Explanation: The atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons would be 6.
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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 electrons in a neutral atom is equal to the number of protons.
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1. The atomic number defines the identity of an element. 2. In an electrically neutral atom, the number of protons equals the number of electrons.