Define P block elements.
Elements in groups 13 to 18 of the periodic table, including metals, metalloids, and nonmetals.
True or false: Boron is a metalloid in the P block.
TRUE
Boron exhibits properties of both metals and nonmetals.
What is the group number for carbon?
Group 14
Fill in the blank: Nitrogen is in group ______ of the P block.
15
Define halogens.
Group 17 elements known for their reactivity and formation of salts.
What is the most abundant P block element in the universe?
Carbon
True or false: Oxygen is a noble gas.
FALSE
Oxygen is a diatomic nonmetal, while noble gases are in group 18.
What is the group number for noble gases?
Group 18
Fill in the blank: Silicon is in group ______ of the P block.
14
Define metalloids.
Elements with properties intermediate between metals and nonmetals.
What is the primary use of silicon?
Widely used in electronics and computer chips.
True or false: Phosphorus exists in several allotropes.
TRUE
Common allotropes include white, red, and black phosphorus.
What is the group number for aluminum?
Group 13
Fill in the blank: Arsenic is in group ______ of the P block.
15
Define noble gases.
Inert gases in group 18, known for their lack of reactivity.
What is the most reactive halogen?
Fluorine
True or false: Lead is a P block metal.
TRUE
Lead is in group 14 and is a heavy metal.
What is the group number for selenium?
16
Fill in the blank: Tin is in group ______ of the P block.
14
Define group 13 elements.
Elements including boron, aluminum, gallium, indium, and thallium.
What is the primary characteristic of noble gases?
They have full valence electron shells.
True or false: Iodine is a solid at room temperature.
TRUE
Iodine appears as dark gray or purple-black crystals.
What is the group number for germanium?
14
Fill in the blank: Bromine is in group ______ of the P block.
17
