An unknown element contains 35 protons, 36 electrons, and...

An unknown element contains 35 protons, 36 electrons, and has mass number 80 . Answer the following questions:
(a) What is the atomic number of this element?
(b) What is the symbol of the element?
(c) How many neutrons does it contain?

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Key Concepts

Chemical Symbol

The chemical symbol is a shorthand designation of an element, typically derived from its English or Latin name, and is used in chemical formulas and equations. The symbol is standardized by the International Union of Pure and Applied Chemistry (IUPAC) and provides a universal language for identifying elements across various scientific disciplines.

Atomic Number

The atomic number of an element is defined as the number of protons in its nucleus. This number uniquely identifies an element and determines its position in the periodic table. It directly relates to the chemical properties of the element because the protons in the nucleus are balanced by electrons in a neutral atom.

Neutron Number

The number of neutrons in an atom is calculated by subtracting the atomic number (number of protons) from the mass number. This calculation is essential in determining the isotope of an element since isotopes vary in their number of neutrons despite having the same atomic number.

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