why is the number of protons called the atomic number?
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The number of protons in an atom is called its atomic number (Z). This number is very important because it is unique for atoms of a given element. All atoms of an element have the same number of protons, and every element has a different number of protons in its atoms.
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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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The atomic number is the number of protons in an element, while the mass number is the number of protons plus the number of neutrons.
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The atoms of different elements differ in the number of protons that are found in their nuclei. The number of protons in an atom's nucleus is called the atomic number. ... The number of protons in an atom's nucleus is called the atomic number. All atoms of the same element have the same atomic number.
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Mass number and atomic number The number of protons is what defines the element , ie an atom with six protons in its nucleus will always be carbon, and uranium will always have 92 protons. The total number of protons and neutrons is called the mass number and the number of protons is called the atomic number .
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The atoms of different elements have different numbers of electrons, protons, and neutrons. Every element is unique and has an atomic number. That number tells you the number of protons in every atom of the element. The atomic number is also called the proton number.
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Explanation: The atomic number is by definition the number of protons, positively charged particles, contained within the atomic nucleus. So if there are 7 protons, there MUST be 7 electrons, 7 negatively charged particles. ... Given that we have 15N , there must be 8 neutrons contained within the nucleus.
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The mass number tells us the number (the sum of nucleons) of protons and neutrons in the nucleus of an atom. The atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom. It is traditionally represented by the symbol Z.
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The atomic number (number at the top) is the amount of protons and the amount of electrons. So if an element has an atomic number of 5, you know that it has 5 protons and 5 electrons. The atomic mass (number at the bottom) is the amount of protons and neutrons added together.
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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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Answer and Explanation: All atoms of an element have the same number of protons. The number of protons in an element is a primary identifier known as its atomic number.
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The atomic number is the the number of protons an element contains. The mass number is the sum of protons and neutrons in the nucleus of an atom. Atomic weight/ mass and Mass number. The mass number is the sum of both neutrons and protons.
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The number of protons in the nucleus of an atom determines an element's atomic number. In other words, each element has a unique number that identifies how many protons are in one atom of that element. For example, all hydrogen atoms, and only hydrogen atoms, contain one proton and have an atomic number of 1.
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Atomic number and mass number. 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 (number of protons). The atoms of different elements have different numbers of protons.
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The mass number (symbol A, from the German word Atomgewicht [atomic weight]), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus.
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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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Atomic number is actually the number of protons in an atom while mass number is the number of nucleons i. e, number of protons plus the number of neutrons.