Answer:Mg is aalkline eath meat belongs to group 2.
Explanation:
Its atomic number is 12 and atomic mass is 24.3
Answer:
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An example of an extensive property of matter is mass , it is the amount of matter in a body. To measure it is used, as with weight, the kilogram. It is a scalar magnitude. there other examples of extensive property such as weight, volumen, length, potential energy, heat capacity and inertia.
An organelle could be the nucleus of a cell.
The nucleus of a cell would be comparable to the nervous system in the body, which is considered an organ system.
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Answer:
The smallest constituent of an element is termed as an atom. According to Jaiden, an atom comprises two subatomic particles and three prime parts, however, this is incorrect as an atom comprises three subatomic particles and two main parts. The three subatomic particles are the protons, electrons, and neutrons. All these parts are smaller in comparison to an atom, thus, they are considered as subatomic particles.
To be considered as an atom, an atom is needed only electrons and neutrons, like hydrogen exhibit one electron and one proton. On the other hand, the overall charge of the atom is not affected by the presence of neutrons, it is the subatomic particle that only enhances the mass of the atom.