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At the bottom, the atomic number is at the top.

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Q: Is the atomic mass on the bottom or top?
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What is the difference between atomic mass unit and atomic mass?

Atomic mass unit is the number on the bottom of the Chemical. However, the atomic mass is the number on the top of the chemical minus the number on the bottom. b.t.w The no. of neutrons = top no. minus bottom no.


What happen to the atomic as you from the bottom to the top of the periodic table?

From the bottom to the top, the elements of the atomic periodic table have less mass and are more stable, in general.


How many neutrons are in alumnium?

14 - Subtract atomic mass(usually bottom #) from atomic number(usually top #).


Towards the bottom of the periodic table does the atomic mass increase or decrease?

Towards the bottom, atomic mass increases. Atomic number also increases.


Why the relative atomic mass of an element in th periodic table in fractional form?

The top left number is the mass (neutrons&protons) and the bottom left number is the atomic number(protons)


Are protons the number on top or the bottom?

For a given isotope of an element, the "top number" (e.g. 14C or carbon-14) is the atomic mass number, the total of neutrons and protons. The bottom number, if displayed, is the atomic number (e.g. 6C all isotopes of carbon have 6 protons). To find the number of neutrons, subtract the atomic number from the isotopes atomic mass number. Here, 14C will have 8 neutrons, and the result is that it is an unstable radioactive isotope. Many stable elements, however, have many more neutrons than protons.


What happens to the atomic size from the top of the periodic table to the bottom?

The atomic size increase from top to bottom of Periodic Table. As the number of shells increases from top to bottom, the atomic size increases.


What happens to the atomic size from the top to the bottom of the periodic table?

The atomic size increase from top to bottom of periodic table. As the number of shells increases from top to bottom, the atomic size increases.


What happens to the atomic number from top to bottom in a column?

The atomic number at the top is always less than the atomic number at the bottom of the column


What trend can be seen in the mass of atoms or elements within a family?

Within a family or group of periodic table the atomic mass increases from top to bottom.


What information is listed in an elements square on the periodic table?

Element name is listed in the center.Element atomic number on the top left.Element atomic mass on bottom left.


What is the mass number and atomic number of nitrogen?

Mass number: 14 Atomic/proton number: 7 If you look at the periodic table, the mass number is the top and the atomic number is the bottom number.