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What is the atomic number of an element?
The number of protons in the nucleus of an atom.
True or False: The periodic table is organized by increasing atomic mass.
False.
What is the symbol for Gold?
Au.
Fill in the blank: The periodic table is arranged into rows called ______.
periods.
Which group of elements is known as the noble gases?
Group 18.
What is the main characteristic of alkali metals?
They are highly reactive and have one electron in their outer shell.
Which element has the atomic number 6?
Carbon.
True or False: Transition metals are found in groups 3-12.
True.
What does the term ‘isotope’ refer to?
Atoms of the same element with different numbers of neutrons.
What is the electron configuration for Neon?
1s² 2s² 2p⁶.
Which element is represented by the symbol ‘Fe’?
Iron.
Fill in the blank: Elements in the same group have similar ______.
chemical properties.
What is the most abundant element in the universe?
Hydrogen.
True or False: Lanthanides and actinides are placed below the main body of the periodic table.
True.
What is the primary factor that determines the placement of an element on the periodic table?
Its atomic number.
Which group contains elements that are good conductors of electricity?
Metals.
What is the common name for Group 17 elements?
Halogens.
What is the significance of the zigzag line on the periodic table?
It separates metals from nonmetals.
Which element has the highest electronegativity?
Fluorine.
True or False: All elements in the periodic table are stable.
False.
What is the atomic mass of Carbon?
Approximately 12.01 amu.
Fill in the blank: The elements in group 1 are known as ______.
alkali metals.
What is a key characteristic of nonmetals?
They are poor conductors of heat and electricity.
