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Chemistry: Atomic Structure and Ions

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Questions and Answers

What does the atomic number (Z) represent?

The number of electrons in an atom

The number of protons in an atom (correct)

The number of neutrons in an atom

The total number of particles in an atom

What did Michael Faraday discover about ions?

Ions are formed when atoms lose or gain electrons (correct)

Ions are formed when atoms are exposed to electromagnetic radiation

Ions are formed when atoms combine with each other

Ions are formed when atoms split into smaller particles

What is the relationship between the mass of an atom and the sum of the masses of its protons and neutrons?

The mass of an atom is equal to the sum of the masses of its protons and neutrons (correct)

The mass of an atom has no relation to the sum of the masses of its protons and neutrons

The mass of an atom is greater than the sum of the masses of its protons and neutrons

The mass of an atom is less than the sum of the masses of its protons and neutrons

What information is typically included in the atomic notation?

The symbol, atomic number, mass number, and charge of the element Signup and view all the answers

What is the purpose of the two opposite electrodes placed in a solution by Michael Faraday?

To separate the elements in the dissolved compound Signup and view all the answers

The mass number (A) of an atom represents the total number of ___ in the nucleus.

protons and neutrons Signup and view all the answers

Which subatomic particle was discovered by James Chadwick in 1932?

Neutron Signup and view all the answers

Ions are formed when an atom ___ one or more electrons.

either gains or loses Signup and view all the answers

Which type of electromagnetic radiation has the highest energy and shortest wavelength?

Gamma rays Signup and view all the answers

In the atomic notation $^{14}_{7}$N, the superscript represents the _, and the subscript represents the _.

mass number, atomic number Signup and view all the answers

What are ANIONS?

Negatively charged ions with more electrons than protons Signup and view all the answers

What are CATIONS?

Positively charged ions with more electrons than protons Signup and view all the answers

How are ISOTOPES defined?

Atoms with the same number of protons but different number of neutrons Signup and view all the answers

How are isotopes identified?

Through their mass number and element name Signup and view all the answers

What is the charge on ANIONS?

Negative charge Signup and view all the answers