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Which of the following are the three main subatomic particles that make up an atom?
Why does the nucleus of an atom carry a positive charge?
For a neutral atom, what is the relationship between the number of protons and the number of electrons?
How can the number of neutrons in an atom be calculated?
In the standard representation of ⁸¹₃₅Br, what does the number 35 represent?
What is the maximum electron capacity of the second shell (n=2) of an atom?
What is the importance of the number of valence electrons for an element?
How are negative ions (anions) formed from neutral atoms?
What is the relative mass of an electron particle?
What happens to the number of protons in the nucleus when a Sodium (Na) atom forms the Na⁺ ion?