Question

Define The Following Terms
1.Atom
2.Isotope
3.Atomic Mass Number
4.Moderator In Nuclear Reactor​

Answer 1

Answer:

Atom - An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.

Isotope -Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nucleon number. All isotopes of a given element have the same number of protons but different numbers of neutrons in each atom.

Atomic Mass Number - The mass number (represented by the letter A) is defined as the total number of protons and neutrons in an atom. Consider the table below, which shows data from the first six elements of the periodic table. Consider the element helium. Its atomic number is 2, so it has two protons in its nucleu

Explanation:

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Answer 2

Answer:

atom : the smallest particle of a chemical element that can exist

lsotope : each of two or more forms of the same element that contain equal number of proton

atomic mass number : the mass number symbol A from the German word atomgewicht also called atomic mass number or nucleus number

moderator In nucleus reactor : in nucleus engineering a neutron moderator is a medium that reduces the speed of fast neutron ideally without capturing any leaving them as thermal neutron with only minimal