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Why actual atomic mass is greater than mass number?
Mass number = number of protons + number of neutrons in an atom
How are mass number and atomic number of an element related?
The mass number is always greater than or equal to the atomic number. Beyond that it's not really possible to say.
Why atomic mass is always greater than atomic number?
Atomic mass includes the total mass of protons, neutrons, and electrons in an atom. Since protons and neutrons contribute significantly to the mass of an atom, atomic mass is generally greater than atomic number, which represents the number of protons in the nucleus. Electrons have a much smaller mass compared to protons and neutrons, so they have less impact on the overall atomic mass.
The atomic mass of iodine is less than the atomic mass?
The atomic mass of iodine is about 126.9 g/mol, which is indeed less than the atomic mass of many other elements. This low atomic mass for iodine is due to its position in the periodic table and the number of protons and neutrons in its nucleus.
What element has a gram atomic mass that is greater than the gram atomic mass of the element with an atomic number higher by one unit?
Both argon and cobalt have this characteristic.
How was mass number arranged in the periodic table?
Strictly, atomic mass is not organised on the periodic table - the periodic table is arranged according to the atomic number (i.e. the number of protons in the nucleus) of the elements.However, as the number of neutrons that are required in the nucleus increases as the number of protons increases, it means that with increasing atomic number you generally get a increase in atomic mass as you go further up the periodic table.BUT, there are exceptions - for complex reasons relating to nuclear stability, the average atomic mass of cobalt (atomic number 27) is actually greater than that of nickel (atomic number 28), and the atomic mass of plutonium (atomic number 94) is greater than that of Americium (atomic number 95).
Which has a greater atomic mass potassium or francium?
Francium has a greater atomic mass than potassium. Francium has an atomic mass of around 223 u while potassium has an atomic mass of around 39 u.
Which one has a greater atomic mass fluorine or carbon?
Fluorine has a greater atomic mass than carbon. Carbon has an atomic mass of approximately 12 atomic mass units (amu) while fluorine has an atomic mass of approximately 19 amu.
Which element has a greater atomic mass A or B?
Element A has a greater atomic mass than element B if the atomic mass value of A is higher. The atomic mass represents the average mass of an element’s isotopes based on their abundance in nature.
How atomic number better than atomic mass?
No two elements may have the same atomic number. But two elements may have same atomic mass. Hence atomic number is better than atomic mass.
Does oxygen have a greater mass than chlorine?
Atomic oxygen does not have a greater atomic mass than chlorine, nor does molecular oxygen. The atomic mass of chlorine is approximately 35 g/mol, while molecular (O2) oxygen has a molecular mass of 32 g/mol.
Can the mass number of the atom ever be smaller than its atomic number?
No. The atomic number only counts the number of protons or electrons in an atom, but the mass number counts at least the number of protons, sometimes the electrons and the number of neutrons if any. The closest they will get is being the same (Hydrogen with AN=1, MN=1), but the mass number will almost always be bigger than the atomic number.
