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What element has a mass number of 21 and an atomic number of 10?
Wiki User
∙ 6y ago
Sc, scandium (21), the first metal element in the 3d-block (transition elements); next to calcium (20).
Wiki User
∙ 13y ago
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What is neon's mass number?
The mass number of an element will depend on which isotope of that element is being considered. The element neon has three stable isotopes, and the mass numbers for them are 20, 21 and 22. This means that there will be 20Ne, 21Ne and 22Ne. Remember that all atoms of neon have 10 protons, regardless of which isotope. A link to the Wikipedia article on neon is supplied.
Neons atomic number?
Neon is a noble gas. It is in p block. Atomic number of neon is 10.
What is the atomic number of an element whose atoms have 9 protons and 10 neutrons?
The atomic number is the number of protons. It is also the number of electrons. The atomic mass equals the protons and neutrons together/weight of the nucleus. So, the atomic number would be nine, because there are 9 protons. The atomic mass would be around 19, because there would be 9 protons and 10 neutrons in the nucleus. The element you are talking about is actually Fluorine, and on the periodic table it says that the atomic mass is 18.9984032. This is because the atomic mass is usually never an exact amount. You can round this decimal place to 19, anyway.
Why can't the mass number be smaller than the atomic number?
The mass number has to be greater then the atomic number because the mass number is the protons plus the neutrons. If you were to take 10-12 you would get a negative number of 2 and there can't be a negative number of neutrons!
What element has an atomic number of 6 and a mass number of 14?
none, nothing has an exact atomic mass, although because you are likely just in high school the answer you are expected to give is N, or Nitrogen
How is the atomic mass calculated for neon?
Neon is a non meta element. Atomic mass of it is 20. Atomic number of it is 10.
What is the atomic number and mass of oxygon?
We can find oxygen as a non metal element. Atomic number of it is 10.
What is the atomic symbol for an element that has 10 neutrons and a mass number of 19?
It contains 10 protons and 10 electrons (no. of protons =no. of electrons in ground state) Number of neutrons=Mass number of element- number of protons =19-10 =9
Element with the atomic number 23?
Vanadium, Symbol V, is the element with atomic number 23.You can find the atomic number of an element from a periodic table as the one you'll find if you follow the link below. The number to the top of an element's symbol is the atomic number (that is , the number of protons in the nucleus.)http://www.electrical-res.com/EX/10-17-19/periodic_table_of_elements.jpg
What is the mass number to boron 10?
Boron is a metal element. Atomic mass of it is 11.
What element has the atomic number 10?
Neon is a none metal element. atomic number of it is 10.
What the number of carbon in the atomic mass number?
The atomic number of carbon is 6. The atomic mass number is 12.011. This information can be found easily on the periodic table of elements.Also on websites that have the periodic table.
What atom or isotope of an element has an atomic mass of 26 charge of 3 13 protons 13 neutrons and 10 electrons?
The number of protons identifies this element as aluminum, which has an atomic number of 13. The number of protons is an element's atomic number on the periodic table. Every element has its own unique atomic number which defines it as that element.
What is neon's mass number?
The mass number of an element will depend on which isotope of that element is being considered. The element neon has three stable isotopes, and the mass numbers for them are 20, 21 and 22. This means that there will be 20Ne, 21Ne and 22Ne. Remember that all atoms of neon have 10 protons, regardless of which isotope. A link to the Wikipedia article on neon is supplied.
What is the atomic number and atomic mass of neon?
The atomic number of neon is 10. The atomic weight (not mass) of neon is 20,1797(6).
Oxygen has eight protons eight neutrons and eight electrons what is the atomic mass?
For finding the atomic mass of any element, we have to get sum of number of protons & number of neutrons. Atomic Mass (A) : p+n. * p = no. of protons. * n = no. of neutrons. Therefore, atomic mass of oxygen is 15.
How do you find the number of electrons in element?
The Atomic Number of the element is equal to the number of electrons. Also, the number of protons is also equal to the Atomic number; so the number of protons and electrons in any given element is the same!
