0
The mass number is a whole number, but the Atomic Mass may not be.
Mass numbers are the total number of neutrons and protons in an isotope (different from atomic numbers, which are the whole numbers of protons only). These are also whole numbers, and for most lithium, it is 7. The mass number is 6 for lithium-6, which has only 3 neutrons.
However, the "atomic mass" of an element is measured in atomic mass units, which are 1/12 of the weight of a carbon-12 atom (6 protons and 6 neutrons). Since neutrons are slightly heavier than protons, and there are more neutrons than protons in lithium-7 (3 protons to 4 neutrons), the atomic mass is slightly more than 7.
What else can I help you with?
What is lithiums mass number?
The mass number of lithium is 7. This number represents the total number of protons and neutrons in the nucleus of a lithium atom.
What is lithiums atomic number?
lithium s atomic no is 3 it has 3 protons and 3 electrons
What was lithiums atomis number?
Li is atom number three, not only 'was' but it still is and ever will be.
What does the decimal number in an element key represent?
atomic mass
How do you get the decimal in an atomic mass?
To get the decimal in an atomic mass, you divide the atomic mass number by 100. For example, if the atomic mass is 23, dividing by 100 would give you 0.23.
What is lithiums chemical symbol?
Li
Why atomic mass is always a whole number but atomic weight may be a decimal number?
Atomic mass is the total mass of protons and neutrons in an atom, which are whole numbers. Atomic weight, on the other hand, takes into account the abundance of different isotopes of an element, which can result in a weighted average that may be a decimal number.
in an element box what does the number with a decimal stand for?
I Believe You Are Referring To The Atomic Mass.
If you add a mass of 3.7 g to a mass of 9.495 g the sum with the correct number of significant digits is?
13.2 3.7 has one digit after the decimal and 9.495 has three digits after the decimal You take the least number, which is one. The final answer has one digit after the decimal.
Why do you not see whole number when you look up an elements atomic mass on a periodic table?
Because to find out the atomic mass of an element you have to subtract the number of protons with the number of neutrons and when you do so you get a decimal number.
In each element square on the periodic table there is a number that has a decimal point in it what does this number represent?
The number with a decimal point in each element square on the periodic table represents the average atomic mass of that element. It takes into account the mass of different isotopes of the element and their relative abundance in nature.
What is the name of the number with a decimal found in an element box?
The number with a decimal found in an element box is called the "atomic mass." It represents the average mass of an element's isotopes, weighted by their natural abundance. This value is typically not a whole number due to the presence of isotopes and their varying proportions.
