IGCSE /Grade 10
Science MCQ Based On Atomic number
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IGCSE Grade 10 Science Atomic number
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Atomic number
Identity of an element
An atomic number is the identity of an element.
The element with atomic number 20 is calcium.
The atomic number is equal to the difference between the nucleons and the number of neutrons.
An atomic number is a difference between the number of nucleons and the number of neutrons.
Protium and deuterium are an example of isotopes.
The atomic number of Barium is 56.
Number of protons = Number of electrons
The atomic numbers 17, 7, and 14 correspond to acidic oxides.
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