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Why are all atomic numbers all whole numbers and most atomic mass number end with a decimals?
Wiki User
∙ 12y ago
this is because the atomic number is the number of protons in an atom, and this never changes. However, the recorded Atomic Mass is a weighted average of all of the isotopes of the atom, because atomic mass is the number protons plus the number of neutrons, and the number of neutrons in an atom differs, causing different atomic masses.
Wiki User
∙ 12y ago
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Why the atomic mass numbers listed for elements on the Periodic Table are not whole numbers.?
Why are atomic masses of elements not generally whole numbers? The atomic masses listed on the periodic table are a weighted AVERAGE of an element'sisotopes. ... An element's atomic number is the number of protons in its nucleus. Number of protons specifies atom type.
Why are atomic numbers always whole numbers?
An atom can't contain only part of a proton, so the number must always be a whole number
What number is the whole number found in the periodic table?
There are two numbers that are included in every element's block on every periodic table. The whole number, which can range from 1 - 118 is the atomic number of that element. The atomic number is the number of protons in the nuclei of the atoms of that element. The second number is the atomic weight and is never a whole number, except for the artificially prepared elements, and then it is a whole number written inside parentheses.There may be other numbers listed as well, depending on the periodic table. All periodic tables have a key as to what everything inside each block represents.
Why are atomic numbers listed as whole numbers?
The atomic number is derived from how many protons are present in the nucleus of an atom. Becaue you cannot have a fraction of a proton present in an atom, atomic numbers must be non negative integers.
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.
What is the difference of the whole numbers and decimals number?
Whole numbers contain no fractional part as do decimals
Are numbers with decimals whole number?
No because whole numbers are integers that do not have decimals or fractions attached to them.
What is a positive number with no decimals or fractions?
Whole numbers are positive numbers and there are no fractions or decimals.
Can negative numbers be whole numbers?
Yes, when they are decimals, it is not considered a whole number.
What is .0213776722 as a whole number?
Decimals can't be whole numbers.
What is the definition of rational number and whole number?
Rational numbers are numbers that can be written as a fraction. A whole number is a number with no decimals.
What is negative 1.36 repeating as a whole number?
Numbers with decimals can't be whole numbers.
What element has the atomic number for 3.14?
No element has this atomic number. All atomic numbers are whole numbers.
How are you rounding whole numbers and decimals?
rounding whole numbers and decimals
Is a 2.2020020002 whole number?
No because whole numbers are integers that do not have decimals or fractions with them.
Is 4.507 a whole number?
No because whole numbers or integers do not have decimals or fractions
Is 51 a whole number?
no. whole numbers are 1,2,3,4 etc., not decimals
