Question

The family name for group VIIIA(18) of the periodic table is:

a. transtion metals

b. noble gases

c. representative elements

d. There is no family name

Answer 1

The family name for group VIIIA(18) on the periodic table is the noble gases, which are very unreactive due to a full valence electron shell. Additionally, ionization energy refers to the energy to remove an electron, a period is a horizontal row on the table, and halogens are reactive elements needing one more electron for a full shell.

Step-by-step explanation:

The family name for group VIIIA(18) of the periodic table is the noble gases. These elements are characterized by their lack of reactivity due to a full valence shell of electrons which makes them very stable. On the other hand, the transition metals are located in groups 3 through 12 of the periodic table and include elements like iron and copper which are known for their ability to form various oxidation states and complex ions.

Now let's address the one-word terms:

1. Ionization Energy: The energy required to remove one electron from an atom.
2. Period: A horizontal row on the periodic table.
3. Halogens: A very reactive group of elements in group VIIA(17) that is missing just one electron from having a full outer shell.

As for the group names of certain elements:

• Krypton is a noble gas.
• Selenium is a chalcogen.
• Barium is an alkaline earth metal.
• Lithium is an alkali metal.

Answer 2

Main Answer:

The family name for group VIIIA(18) of the periodic table is:

b. noble gases

Step-by-step explanation:

The correct family name for group VIIIA(18) in the periodic table is "noble gases." Noble gases, also known as inert gases, include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).

These elements are characterized by their stable and unreactive nature due to a complete outer electron shell.

The term "noble" reflects their reluctance to form chemical bonds with other elements. In contrast to the other options, such as transition metals and representative elements, the noble gases exhibit distinct properties that place them in a unique category on the periodic table.

Therefore, option b, "noble gases," accurately identifies the family name for group VIIIA(18).