Potassium-41 – It has 19 protons and atomic mass is 41.
Which atom has an atomic mass of 40?
Argon [Ar] has mass number (A) = 40.
What element has an atomic mass of 41?
| Atomic Mass Name chemical element number | 92.9064 Niobium 41 | 95.94 Molybdenum 42 | 98 Technetium 43 | 101.07 Ruthenium 44 |
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What is the 41st element in the periodic table?
Niobium, also known as columbium , is a chemical element with the symbol Nb (formerly Cb) and atomic number 41.
What is the atomic mass of potassium 41?
| Isotope Atomic mass (Da) Isotopic abundance (amount fraction) | 39 K 38.963 706 49(3) 0.932 581(44) | 40 K 39.963 9982(4) 0.000 117(1) | 41 K 40.961 825 26 (3) 0.067 302(44) |
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How do we calculate atomic mass?
For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu , you can calculate the mass of the atom.
What element has 15 electrons and 15 neutrons?
| Name Phosphorus | Atomic Mass 30.974 atomic mass units | Number of Protons 15 | Number of Neutrons 16 | Number of Electrons 15 |
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What are the first 30 elements?
| ATOMIC NUMBER ELEMENT ATOMIC MASS | 1 Hydrogen 1.008 | 2 Helium 4.0026 | 3 Lithium 6.94 | 4 Beryllium 9.0122 |
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What is the highest atomic number?
Oganesson has the highest atomic number and highest atomic mass of all known elements.
Which element contains 40 protons and 51 neutrons?
| Name Zirconium | Atomic Mass 91.224 atomic mass units | Number of Protons 40 | Number of Neutrons 51 | Number of Electrons 40 |
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Who is element 41 named after?
Niobium. What an evocative name! The element was christened after Niobe , the daughter of Tantalus in Greek mythology.
What is the 42nd element?
Molybdenum – Element information, properties and uses | Periodic Table.
Is niobium harmful to humans?
Niobium and its compounds may be toxic (niobium dust causes eye and skin irritation) , but there are no reports of human being poisoned by it . Apart from measuring its concentration, no research on niobium in humans has been undertaken. Niobium, when inhaled, is retained mainly in the lungs, and secondarily in bones.
Why potassium 41 is unstable?
This difference is enough to make potassium 40 unstable. The reason for this is that protons, like neutrons, like to exist in pairs in a nucleus . Potassium 40 contains odd numbers of both – 19 protons and 21 neutrons. As a result it has one bachelor proton and one bachelor neutron.
What is the decay mode of k 37?
| Nuclide Z Decay mode | Excitation energy | 37 K 19 β + | 38 K 19 β + | 38m1 K 130.50(28) keV β + |
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