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Why atomic mass is always a whole number but atomic weight may be a decimal number?
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∙ 10y ago
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Difference between atomic weight and mass number?
Atomic mass (ma) is the mass of an atom. A single atom has a set number of protons and neutrons, so the mass is unequivocal (won't change) and is the sum of the number of protons and neutrons in the atom. ... Atomic weight is a weighted average of the mass of all the atoms of an element, based on the abundance of isotopes.
What does the number of protons of an atom indicate on the periodic table?
In the periodic table, atomic numbers are given alongside the symbol of each atom. As atomic number is always equal to number of protons, so the Periodic Table also tells us about the number of protons in different atoms...
What elements on the periodic table are usually identified with three things?
Symbol, atomic number, and atomic weight.
What is the number in front of a chemical formula called-?
atomic number or atomic weight. Subscript: atomic number, superscript: atomic weight: 94Pu239 or 239Pu
How can you calculate the number of neutrons N in an atom?
equal to number of protons
Does the number of protons in an atom of an element always equal its atomic weight?
atomic weight = mass of protons + mass of neutrons
Atomic Mass and Atomic Number of neon?
The Atomic number of Neon is 10 and the Atomic weight is about 20.18g rounded off to 2 decimal places. If you don't have a periodic table you should get one most periodic tables have the atomic weight of all elements you need to know to around 2 decimals. I printed mine off Google images =)
Is the atomic weight the same as the atomic number?
No, the atomic number is the number of protons that an atom contains. Atomic weight is the number of protons and neutrons.
How was is the atomic number and the atomic weight of uranium found?
Atomic number of uranium: 92 Atomic weight of uranium: 238,02891
Atomic weight and atomic number of copper?
Its atomic number is 29 and its standard atomic weight is 63.5 g/mol.
What is the number of neutrons in an atomic number?
Subtract the atomic number from the atomic weight.
What is the number in front a chemical formula is called?
atomic number or atomic weight. Subscript: atomic number, superscript: atomic weight: 94Pu239 or 239Pu
Total number of protons and neutrons in the atom is?
The total number of neutrons in an atom is known as its atomic mass. The sum of all the atomic weights of isotopes of a particular element is known as an element's atomic weight. Atomic weights are decimal numbers for this reason.
What is carbons atomic weight?
Atomic Number = 6. Atomic Weight = 12.011
What is the element that has atomic weight 40?
Calcium has an atomic weight of 40. Other info about Calcium: Symbol: Ca Name: Calcium Atomic Number: 20 Atomic Weight: 40.08 Number of Neutrons: 20 (atomic weight - atomic number) Number of Protons: 20
Atomic weight is equal to the?
Atomic weight/ mass = number of protons + number of neutrons
Fluorine has an atomic number of 9 and an atomic weight of 19 so how many electrons are present in an uncharged fluorine atom?
In an uncharged atom, the number of electrons is always equal to the atomic number, in this instance, 9.
