Down a group, the atomic radius increases as the number of shells or energy levels increases.
the atomic radius increases down the periodic table as the number of shell (or energy level) increases.
Atomic Mass
it increases as you go down the periodic table
Electronegativity increases across (left to right) the periodic table and decreases on going down.
Down a group, the atomic radius increases as the number of shells or energy levels increases.
the atomic radius increases down the periodic table as the number of shell (or energy level) increases.
Atomic Mass
The density properties generally change as you go down the columns of the Periodic Table by increasing.
atomic radius increases down a group as the number of shells increases
it increases as you go down the periodic table
Periods (across the Periodic Table) have increasing Atomic Mass. Groups (down the table) have similar properties and reactive natures.
The number of valence electrons increases by one as you move down a group in the periodic table. Valence electrons are the electrons in the outermost energy level of an atom, and they determine the chemical properties of an element.
The melting temperature properties generally change as you go down the columns of the Periodic Table by decreasing for metals and increasing for non-metals.
Electronegativity increases as we move from left to right on the periodic table.
Electronegativity generally decreases as you go down a group on the periodic table due to the increasing distance between the nucleus and valence electrons, reducing the attractive force. Across a period, electronegativity generally increases due to the increasing nuclear charge, pulling valence electrons closer and increasing their attraction.
Electronegativity increases across (left to right) the periodic table and decreases on going down.