Front

What are the noble gases and where are they located on the periodic table?

Back

Noble gases are a group of elements located in column 18 of the periodic table. They are known for their lack of reactivity due to having a full valence shell.

Front

What are metalloids and where can they be found on the periodic table?

Back

Metalloids are elements that have properties of both metals and nonmetals. They are located along the zigzag line (staircase) on the periodic table.

Front

What is the significance of atomic number in the periodic table?

Back

The atomic number is the number of protons in an atom's nucleus and determines the element's identity. The periodic table is arranged in order of increasing atomic number.

Front

Why are noble gases considered unreactive?

Back

Noble gases are considered unreactive because they have a full valence shell of electrons, which makes them stable and unlikely to form chemical bonds.

Front

Which group of elements contains the most members in the periodic table?

Back

The metals group contains the most elements in the periodic table, including alkali metals, alkaline earth metals, transition metals, and post-transition metals.

Front

What is the general trend in reactivity among the alkali metals?

Back

Reactivity among alkali metals increases as you move down the group in the periodic table.

Front

What are the main characteristics of metals?

Back

Metals are typically shiny, good conductors of heat and electricity, malleable, and ductile.

Front

What distinguishes nonmetals from metals?

Back

Nonmetals are generally poor conductors of heat and electricity, are not malleable or ductile, and can be gases, liquids, or solids at room temperature.

Front

What is the role of the zigzag line on the periodic table?

Back

The zigzag line on the periodic table separates metals from nonmetals and indicates the location of metalloids.

Front

How do the properties of elements change across a period in the periodic table?

Back

As you move from left to right across a period, elements typically become less metallic and more nonmetallic, with increasing electronegativity and ionization energy.