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It is the number of protons in the nucleus of an atom of the element in question and so is always an integer. And, because we count in tens the number is a decimal integer.
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What does the decimal number in an element key represent?
atomic mass
What does the number 2 and 4003 mean of helium?
Helium has atomic number 2. That means the helium atom has 2 protons and two electrons. The standard atomic weight of helium is 4.002602, or 4.003 rounded to 3 decimal places.
What is a number that contains a decimal point?
It is a number with a decimal point. It is not necessarily a decimal number because 24 (no decimal pont) is a decimal number.It is a number with a decimal point. It is not necessarily a decimal number because 24 (no decimal pont) is a decimal number.It is a number with a decimal point. It is not necessarily a decimal number because 24 (no decimal pont) is a decimal number.It is a number with a decimal point. It is not necessarily a decimal number because 24 (no decimal pont) is a decimal number.
What is the name of a number that has a digit in the tenths place hundredths or beyond?
It is a decimal fraction. Not just a decimal, since 2,000,000 for example, is a decimal number.It is a decimal fraction. A decimal number need not have any digits in fractional places.
How many decimal places are in a product of a number with decimal places to the thousandths multiplied by a number with decimal places to the hundredths?
There will be five decimal places.
Why atomic mass is always a whole number but atomic weight may be a decimal number?
Atomic mass of isotopes is not a whole number.
How to tell protons neutrons mass numbers atomic weights from periodic table?
atomic weights is usually the number that has decimal points. so whenever you see a number with decimal point on periodic table, then that is the atomic mass.
What does the decimal number in an element key represent?
atomic mass
How many protons does an atom with an atomic number of 82 and a mass number of 112.6 have?
the atomic number is the number of protons. the atomic mass is the number of protons plus the number of neutrons. yours is a decimal so it's an average.
in an element box what does the number with a decimal stand for?
I Believe You Are Referring To The Atomic Mass.
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.
Why does the atomic mass on the periodic table progressively changes left to right and top to bottom why?
Because there are increasingly more protons, electrons, and neutrons. Atomic mass is the average number of neutrons in all of the isotopes(different types) of a specific element, meaning you can sometimes have decimal masses. But, the atomic number is never a decimal because the atomic number is just a numbering system for all the elements.
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.
How you would calcualte the number of neutrons in potassium?
subtract the atomic number (#of protons, it's on ur periodic table) from the atomic mass (it's usually a decimal, also on ur periodic table.) this will give u the number of neutrons. the atomic mass is PROTONS + 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 =)
What do whole numbers on the periodic table represent?
The whole number, the one at the top, above the element's symbol in the element box, is the atomic number. The atomic number is the number of protons per atom in that particular element. The bottom number, that is always a decimal, is the atomic mass.
What is the square root of the atomic number of helium?
Weird concept, but: Atomic number of helium is 2, so its square root is √2. √2 is an irrational number so only an approximate decimal expansion can be made: √2 ≈ 1.4142
