Question

each element is unique and no two elements of the same set of ______​

Answer 1

Answer:

i don't know

Explanation:

i don't understand

Answer 2

Answer:

Each element is unique and no two elements have the same set of number of protons and neutrons, giving it its own atomic number and mass number.

Explanation:

Atomic number is the number of protons in the nuclei of an element. Since no two element can have same number of protons, thus atomic number cannot be same and also atomic number can also be called an unique ID of an element. All atoms have protons, electrons and neutrons, but what makes each element unique is the number of protons.

Each element has its own unique properties. Each contains a different number of protons and neutrons, giving it its own atomic number and mass number. The atomic number of an element is equal to the number of protons that element contains.

The rarest naturally occurring element is astatine (At). There are about 28 g of it in the Earth's crust. Astatine got its name from the Greek word astatos, meaning unstable. Carbon (C) reacts with other elements to produce 10 million different compounds.

It is important to be able to distinguish atoms of one element from atoms of another element. Elements are pure substances that make up matter, so each one is given a unique name. The names of elements are also represented by unique one- or two-letter symbols, such as H for hydrogen, C for carbon, or He for helium.

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