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mass numbers are whole numbers because the mass number is number of protons in an atom, plus the number of neutrons. you can only have a whole neutron and or proton, therefore, all mass numbers are whole numbers.
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Which couting numbers are also whole numbers?
Whole numbers can be positive or negative numbers. Numbers are whole as long as they have no fractins or decimals with them.
Are positive numbers whole numbers?
No. Positive numbers can be whole numbers but they can also be decimal numbers and fractions. If a value is a whole number, it does not have a fraction or decimal part and it is not negative. Whole numbers are also called natural numbers or counting numbers.
Is some whole numbers are not integers?
No. All whole numbers are integers and all integers are whole numbers.
Are rational numbers is a whole number?
Some rational numbers are whole numbers, some are not. The set of whole numbers is a proper subset of rational numbers.
Do whole numbers include negative numbers?
Yes. ...-3,-2,-1,0,1,2,3... are all whole numbers. Whole numbers are any numbers that aren't a fraction and that includes negative numbers.
Are the mass numbers but not the atonic mass whole numbers?
correct
Why the mass numbers on the periodic table of elements are rarely whole numbers?
Elements also possess isotopes. So their average atomic mass is rarely whole number.
What is the mass of mercury Hg?
The atomic mass is 201 (rounded to whole numbers). Is that what you needed?
Why is the atomic mass of nobelium a whole number?
For elements with no stable isotopes (like Nobelium), the mass number of the isotope with the longest half-life is used. Mass numbers are whole numbers.
Why is the mass numbers of isotopes exact whole numbers but the relative masses of most Atoms are not exact whole numbers?
Relative atomic massisthe ratio of the averagemassofatomsof anelementto 1/12 of the mass of an atom ofcarbon-12. The mass number of an isotope is the sum of protons and neutrons in the atoms of the isotope.
Why is the relative atomic mass of chloride not a whole number?
Because relitive atomic masses are NEVER whole numbers.
Does the mass number of an element have to be a whole number?
Approximately, yes. But the mass number is an average of the masses of the isotopes of the element, weighted together according to their abundance. This averaging of different whole numbers results in the mass number not being a whole number.
The atomic mass of the elements are not whole value numbers because of the existence of?
D. Protons
How do isotopes differ and why is the atomic number of elements not a whole number?
Isotopes differ from each other by having different numbers of neutrons but the same number of protons since they are only the same element if they have the same number of protons. Atomic numbers aren't whole because their mass is based of the mass of hydrogen and amu's (atomic mass units) and due to how elements are formed, minute amounts of mass are lost in order to form the nuclear bonds resulting in not whole numbers.
Why do you round mass numbers to the nearest whole number?
That is done mainly for basic chemistry. The normal practice is to take the weighted average of the various isotopes which, in almost all cases leads to numbers which are not whole.
Why is lithium's mass number a decimal number?
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 are two ways in which whole numbers and decimal numbers are different?
Whole numbers are a proper subset of decimal numbers. All whole numbers are decimal numbers but not all decimal numbers are whole numbers.
