Noble with big d-orbitals
Periodicity refers to the repeating pattern of properties of elements in the periodic table.
What color is the flame when burning Barium compounds?
What is the element in Group 17 is commonly used to disinfect water?
Chlorine
What is the chemical formula for dinitrogen pentoxide?
N2O5
Chlorine
What is the element with the highest melting point in Group 2?
Beryllium
What is the most reactive Halogen?
Fluorine
Why does Nitrogen gas in the atmosphere tend to be inert?
Due to its strong triple bond
What is the trend of atomic radius within a period? Explain the trend.
The atomic radius generally decreases from left to right within a period on the periodic table. This is due to increasing number of protons (nuclear charge)
What is the element with the lowest electronegativity in Group 2?
Barium
What is the common oxidation state of halogens in compounds?
-1
Ammonia is a Bronsted-Lowry base? Why?
It is a proton (hydrogen ion) accepter.
What would be the pH of the solution formed when dissolving Sodium oxide in water
Very Basic around 14 pH
Which group 2 metals is the most reactive with water? Explain this trend.
Barium. Barium electrons are furthest from the nucleus and can be easily removed
What is an indication of iodide ions present after the addition of silver nitrate?
Precipitate forms but is not soluble with any concentration of ammonia
Nitrogen in the atmosphere can create acid rain. Which compound is responsible for this.
HNO3 Nitric Acid
Which period 3 oxides act as acids?
Silicon, Phosphorus, and Chlorine
Which group 2 metal oxide forms the most basic solution in water.
Barium oxide
Which precipitate will dissolved readily in dilute aqueous ammonia?
Chloride precipitate
Ammonium ions are said to contain a dative or coordinate bond. What is meant by this type of bond.
Hint: Consider the structure of ammonia and the ammonium ion
A bond formed from one atom providing both electrons needed to create the bond.