Question

match each item with the correct statement below.
horizontal row in the periodic table
vertical column in the periodic table
a repetition of properties occurs when
elements are arranged in order of increasing
atomic number.
type of element that is a good conductor of
heat and electric current
type of element characterized by the presence
of electrons in the d orbital
one - half the distance between the nuclei of two
atoms when the atoms are joined
basis for mendeleevs arrangement of the
periodic table
subatomic particles that are transferred to form
positive and negative ions
ability of an atom to attract electrons when the
atom is in a compound
energy required to remove an electron from an
atom
atomic radius ionization energy periodic law atomic mass metal
transition metal period electrons electronegativity group

Explanation:

• A horizontal row in the periodic table is called a period.
• A vertical column in the periodic table is called a group.
• The periodic law states that a repetition of properties occurs when elements are arranged in order of increasing atomic number.
• A metal is a type of element that is a good conductor of heat and electric current.
• A transition metal is a type of element characterized by the presence of electrons in the d orbital.
• Atomic radius is one - half the distance between the nuclei of two atoms when the atoms are joined.
• Mendeleev arranged the periodic table based on atomic mass.
• Electrons are the subatomic particles that are transferred to form positive and negative ions.
• Electronegativity is the ability of an atom to attract electrons when the atom is in a compound.
• Ionization energy is the energy required to remove an electron from an atom.

Answer:

• horizontal row in the periodic table: period
• vertical column in the periodic table: group
• A repetition of properties occurs when elements are arranged in order of increasing atomic number: periodic law
• type of element that is a good conductor of heat and electric current: metal
• type of element characterized by the presence of electrons in the d orbital: transition metal
• one - half the distance between the nuclei of two atoms when the atoms are joined: atomic radius
• basis for Mendeleev’s arrangement of the periodic table: atomic mass
• subatomic particles that are transferred to form positive and negative ions: electrons
• ability of an atom to attract electrons when the atom is in a compound: electronegativity
• energy required to remove an electron from an atom: ionization energy