Nucleus.
Center of gravity = center of mass, for most practical purposes. Mainly, the center of mass is the place where you imagine the mass to be concentrated. However, as a result, you can also consider inertia and weight to be concentrated at the center of mass.
Atomic mass is measured in atomic mass units (amu).
The number of neutrons in an atom can affect the atomic mass of an atom.
The relative atomic mass is 131.293
This very important characteristic is called the atomic weight. It represents a weighted average of the naturally occurring isotopes of an element. When a quantity of the element is weighed, the different isotopes - and the relative percentage they comprise of the whole - are accounted for. This makes for accurate readings in laboratory measurements.(earth science voc. word "atomic mass")
It is the nucleus. Mass of electrons is too small
Average atomic mass is closest to its most commonisotope.
in the nucleus of the atom
The mass of an atom is concentrated in the nucleus (protons+neutrons).
No, electron count really doesn't have anything much to do with atomic mass. Let's look. Most of the mass of any atom is concentrated in the nucleus. It's the protons and neutrons there that give the atom "weight" and the electrons contribute almost nothing. Additionally, electrons can be loaned or borrowed by atoms, and this changes their mass very little. The number of electrons is not very "connected" to atomic mass of an atom.
The atomic mass (ma) is the mass of a specific isotope, most often expressed in unified atomic mass units.[1] The atomic mass is the total mass of protons, neutrons and electrons in a single atom.[2]The atomic mass is sometimes incorrectly used as a synonym of relative atomic mass, average atomic mass and atomic weight; these differ subtly from the atomic mass. The atomic mass is defined as the mass of an atom, which can only be one isotope at a time and is not an abundance-weighted average as in the case of atomic weight. In the case of many elements that have one dominant isotope the actual numerical similarity/difference between the atomic mass of the most common isotope and the relative atomic mass or standard atomic weights can be very small such that it does not affect most bulk calculations-but such an error can be critical when considering individual atoms. For elements with more than one common isotope the difference even to the most common atomic mass can be half a mass unit or more (e.g. chlorine). The atomic mass of an uncommon isotope can differ from the relative atomic mass or standard atomic weight by several mass units.
Carbon-12 is the most common form of Carbon and therefore, counts for most of the atomic mass.
The Rutherford atomic model contain a central, positive, concentrated mass called atomic nucleus; around the nucleus are moving electrons.
The most stable isotope of berkelium - 247Bk - has an atomic mass of 247. The atomic number of berkelium is 97.
in the nucleus of the atom
The most common isotope is einsteinium-253. So atomic mass is 253 for the most common isotope
Most of the mass of a flywheel is concentrated at the rim so as to have a larger moment of inertia for the same mass. This is due to the fact that the moment of inertia varies as the square of the distance from the axis of rotation.