Explanation

Dynamic equilibrium is a state where the rates of forward and reverse reactions are equal, and the concentrations of reactants and products remain constant.

However, this equilibrium can be disturbed by external stresses such as:

• Changes in concentration
• Changes in temperature
• Changes in pressure
• Adding or removing reactants or products

Explanation

Silver nitrate (AgNO3) is a strong oxidizing agent and a caustic substance.

It is also known as "lunar caustic" due to its historical use to treat lunar burns (sunburn).

Explanation

Chlorine (Cl) is a strong oxidizing agent.

It means it can accept electrons from other substances and cause them to be oxidized.

Explanation

Selenium (Se) is a metalloid, which means it exhibits some properties of metals and some properties of nonmetals.

Metalloids are elements that are intermediate in character between metals and nonmetals.

Explanation

Group VIII-A, also known as the noble gases, consists of:

• Helium (He)
• Neon (Ne)
• Argon (Ar)
• Krypton (Kr)
• Xenon (Xe)
• Radon (Rn)

Explanation

Bromine (Br2) is the only halogen that exists in a liquid state at room temperature.

It is a reddish-brown liquid with a melting point of -7.2°C or 19°F.

Explanation

Hydroiodic acid (HI) is the strongest acid.

The acidity of hydrohalic acids increases down the group in the periodic table.

Due to the decreasing bond strength and increasing bond length.

Explanation

Chlorine can be displaced by fluorine (F).

This is because fluorine is more reactive than chlorine.

As halogen reactivity decreases down the group in the periodic table.

Explanation

Ba is the chemical symbol for Barium, a chemical element with atomic number 56.

It is a soft, silvery-white alkaline earth metal.

Explanation

Barium is an alkaline earth metal, which is a group of elements in the periodic table that includes:

• Magnesium (Mg)
• Calcium (Ca)
• Strontium (Sr)
• Barium (Ba)
• Radium (Ra)

These elements are in group 2 (formerly group IIA) of the periodic table.