Atomic Structure and Nuclear Stability Quiz

What is the positively charged center of an atom called?

• Electron cloud

• Neutron

• Nucleus

• Isotope

What are the particles found in the nucleus of an atom collectively known as?

• Electrons

• Nucleons

• Isotopes

• Elements

What determines the atomic number of an element?

• Number of neutrons

• Number of electrons

• Number of protons

• Mass number

What is the term for atoms of the same element with different numbers of neutrons?

• Nucleons

• Isotopes

• Elements

• Electrons

What is the mass number of an atom?

• Total number of protons

• Total number of electrons

• Total number of nucleons

• Total number of isotopes

What is the element with the atomic number 6?

• Oxygen

• Carbon

• Nitrogen

• Helium

What is the symbol for the element with atomic number 26?

• Fe

• Cu

• Zn

• Ag

What is the name of the isotope of an atom with 90 protons and 144 neutrons?

• Uranium-234

• Thorium-234

• Radium-234

• Polonium-234

What is the name of the isotope of an atom with 26 protons and 30 neutrons?

• Iron-56

• Nickel-56

• Cobalt-56

• Zinc-56

What force holds electrons around a nucleus?

• Gravitational force

• Magnetic force

• Electrostatic force

• Nuclear force