Chem Periodic Table Trends final

Front

What are noble gases and why are they considered unreactive?

Back

Noble gases are elements in Group 18 of the periodic table that have filled valence electron shells, making them very stable and unreactive.

Front

Identify the period and group of arsenic in the periodic table.

Back

Arsenic is located in Period 4, Group 15 of the periodic table.

Front

What is the trend in ionization energy for group 1 metals and why does the 2nd ionization energy increase dramatically?

Back

The 2nd ionization energy for group 1 metals increases dramatically because removing a second electron results in a stable noble gas configuration.

Front

Describe the trend of atomic radius across a period in the periodic table.

Back

The atomic radius decreases from left to right within a period due to increasing nuclear charge, which pulls electrons closer to the nucleus.

Front

What does high electronegativity indicate about an atom's ability to attract electrons?

Back

Atoms with high electronegativity hold on to their electrons tightly, indicating a strong ability to attract electrons in a chemical bond.

Front

What is the significance of the periodic table's group number in relation to valence electrons?

Back

The group number of an element indicates the number of valence electrons it has, which influences its chemical properties and reactivity.

Front

Explain the concept of ionization energy and its periodic trend.

Back

Ionization energy is the energy required to remove an electron from an atom. It generally increases across a period and decreases down a group.

Front

What is the relationship between atomic size and metallic character in the periodic table?

Back

As atomic size increases, metallic character increases; larger atoms tend to lose electrons more easily, exhibiting more metallic properties.

Front

Define electronegativity and its trend in the periodic table.

Back

Electronegativity is a measure of an atom's ability to attract and hold onto electrons. It generally increases across a period and decreases down a group.

Front

What are the characteristics of alkali metals in terms of reactivity?

Back

Alkali metals are highly reactive, especially with water, due to their single valence electron, which they readily lose.