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An electron has a mass of 9.109 X 10-31 kg, approximately 1⁄1840 the mass of a proton. However, the term mass number doesn't apply to electrons, it applies to atomic nuclei. The mass number of a nuclear isotope is the total number of protons and neutrons, together known as nucleons, of the isotope, and is denoted by (A).
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What is the first quantum number of a 2s2 electron in phosphorus?
The first quantum number of a 2s electron in phosphorus is the principal quantum number, which specifies the energy level of the electron shell. For a 2s electron, the principal quantum number is 2.
What information does the first quantum number of an electron give?
The energy level the electron is in
What is an electron's atomic mass number?
The electron has no atomic mass number. The mass of an electron is roughly 1/1800 of the mass of a proton or neutron.
What could the fourth quantim number of 3p3 electron be?
The fourth quantum number, known as the electron spin quantum number, can have a value of +1/2 or -1/2 for an electron in an orbital.
What number tells you the number of valence electron?
group number
Mass number of an electron?
The mass number of an electron is 5.485 799 095 x 10-4 amu.
What is the total electron number for phosphorus?
The total electron number for phosphorus is 15 because phosphorus has 15 electrons.
What do you to find a electron of an isotope?
subtract the number of protons from the number of electrons. The above answer does not answer the question!!
How many electron rings are found in each period of the periodic table?
The number of electron rings in each period of the periodic table corresponds to the period number. For example, in the first period (row), there is only one electron ring; in the second period, there are two electron rings, and so on.
What is the first quantum number of a 2s electron in phosphorus?
The first quantum number, also known as the principal quantum number (n), indicates the energy level of an electron in an atom. For a 2s electron in phosphorus, which has an electron configuration of 1s² 2s² 2p⁶ 3s² 3p³, the principal quantum number is 2. This indicates that the electron is located in the second energy level.
Which of these elements has the same number of electron orbitals as the element sodium?
The element magnesium has the same number of electron orbitals as sodium - both have three electron orbitals. Sodium and magnesium are in the same period on the periodic table, which means they have the same number of electron shells.
What is the number of electron orbits in tantalum?
Tantalum has 73 electrons. The number of electron orbits in an atom is equal to the number of electron shells, which is determined by the quantum number n. Tantalum's electron configuration is [Xe] 4f14 5d3 6s2, indicating that it has 6 electron orbits.
