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It is an element.
No, element is a unique existing in the universe. But elements are made up of sub atomic particles. Some sub atomic particles have mass and some other don't have. So simplest form of matter is the photon whose rest mass is zero. Yet it has momentum. That is the quantum of energy. Energy is the ultimate reality.
The properties of primary key are as follows: 1. It should be unique. 2. It should be not null.
It is a relationship from one set (S) to another (T) - which need not be a different set such that for every element in S there is a unique element in T.
They are both 2 dimensional polygons having their own unique properties
It is an element.
It is an element
A single kind of matter that has a distinct physical and chemical properties is called?
Hydrogen is the element with unique properties that doesn't fit in any group.
Hydrogen is the element with unique properties that doesn't fit in any group.
atom
Yes, it is true.
Hydrogen
Hydrogen is a unique element of the Periodic Table. Due to its similarities in properties it can be placed at the top of group 1A or 4A or 7A.
This particle is the atom.
No, element is a unique existing in the universe. But elements are made up of sub atomic particles. Some sub atomic particles have mass and some other don't have. So simplest form of matter is the photon whose rest mass is zero. Yet it has momentum. That is the quantum of energy. Energy is the ultimate reality.
A molecule is the smallest unit of a pure substance that can exist and still retain its chemical properties. An atom is the smallest unit of an element that can exist and still retain its chemical properties.