Periodic trends play a big role in how elements act during chemical reactions. Here are some important trends to know:
Reactivity: This usually gets stronger as you move down a group. For example, alkali metals like sodium and potassium become more reactive as you go down the group.
Electronegativity: This term means how strongly an atom can attract or hold onto electrons. Electronegativity usually goes up across a period (from left to right) and goes down as you move down a group. For instance, fluorine is the most electronegative element with a score of 4.0.
Ionization Energy: This is the energy needed to remove an electron from an atom. Ionization energy generally increases across a period. For example, it jumps from 520 kJ/mol for lithium to 2080 kJ/mol for neon.
By knowing these trends, we can better predict how different elements will react with each other.
Periodic trends play a big role in how elements act during chemical reactions. Here are some important trends to know:
Reactivity: This usually gets stronger as you move down a group. For example, alkali metals like sodium and potassium become more reactive as you go down the group.
Electronegativity: This term means how strongly an atom can attract or hold onto electrons. Electronegativity usually goes up across a period (from left to right) and goes down as you move down a group. For instance, fluorine is the most electronegative element with a score of 4.0.
Ionization Energy: This is the energy needed to remove an electron from an atom. Ionization energy generally increases across a period. For example, it jumps from 520 kJ/mol for lithium to 2080 kJ/mol for neon.
By knowing these trends, we can better predict how different elements will react with each other.