2 Flashcards
What is the atomic number of Hydrogen?
1
True or False: Helium is a noble gas.
True
Which element has the symbol ‘Fe’?
Iron
Fill in the blank: The periodic table is arranged by increasing __________.
atomic number
What is the chemical symbol for Gold?
Au
True or False: The elements in a group of the periodic table have similar chemical properties.
True
What is the element with atomic number 6?
Carbon
Which element is known as the ‘lightest metal’?
Lithium
What is the group number for the alkali metals?
Group 1
Which element has the highest atomic number that occurs naturally?
Uranium
What is the chemical formula for water?
H2O
Fill in the blank: The lanthanides and actinides are located at the __________ of the periodic table.
bottom
What is the main characteristic of noble gases?
They are inert and do not react easily with other elements.
Which element has the symbol ‘Na’?
Sodium
True or False: All metals are solid at room temperature.
False
What is the most abundant element in the universe?
Hydrogen
Which two elements are liquid at room temperature?
Mercury and Bromine
What does the term ‘isotope’ refer to?
Atoms of the same element with different numbers of neutrons.
What is the atomic mass of Carbon?
12.01 u
Which element is represented by the symbol ‘Cl’?
Chlorine
Fill in the blank: The periodic law states that the properties of elements are a periodic function of their __________.
atomic numbers
What is the chemical symbol for Silver?
Ag
Which group of the periodic table contains the halogens?
Group 17
True or False: Transition metals are found in the s-block of the periodic table.
False
What is the common oxidation state of alkali metals?
+1
Which element has the atomic number 26?
Iron
What is the main characteristic of nonmetals?
They are poor conductors of heat and electricity.
Fill in the blank: The element with atomic number 1 is __________.
Hydrogen
What is the symbol for Potassium?
K