Structure of the Atom
Chemistry ⇒ Atomic Structure and the Periodic Table
Structure of the Atom starts at 7 and continues till grade 12.
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Describe the location of electrons in an atom according to the Bohr model.
If an atom has 11 protons and 12 neutrons, what is its mass number?
If an atom has 15 protons, 16 neutrons, and 15 electrons, what is its mass number?
If an atom has 17 protons, how many electrons does it have in a neutral state?
If an atom has 6 protons, 6 neutrons, and 6 electrons, what is its atomic number?
If an atom has 8 protons and 10 neutrons, what is its mass number?
Name the scientist who proposed the nuclear model of the atom.
The atomic number of sodium is 11. How many protons does a sodium atom have?
What is the charge of a proton?
What is the charge on the nucleus of an atom?
What is the main difference between the atomic models of Thomson and Rutherford?
What is the main function of neutrons in the nucleus?
What is the name given to atoms of the same element with different numbers of neutrons?
Which part of the atom contains most of its mass?
A certain atom has 18 electrons, 18 protons, and 22 neutrons. What is the symbol for this atom, and what is its mass number?
A neutral atom of element X has 20 protons and 22 neutrons. What is the atomic mass number of this atom?
An atom of magnesium has 12 protons, 12 neutrons, and 12 electrons. If it loses two electrons, what is the resulting charge of the ion?
Explain why atoms are electrically neutral even though they contain charged particles.
If an atom has 9 protons, 10 neutrons, and 10 electrons, is it a neutral atom or an ion? Explain your answer.
State one reason why the mass of an atom does not change significantly when it loses or gains electrons.
