Elements in group 7A in the periodic table are called the halogens;elements in group 6A are called the chalcogens. (a)What is the most common oxidation state of the chalcogenscompared to the halogens? (b) For each of the following periodicproperties, state whether the halogens or the chalcogenshave larger values: atomic radii, ionic radii of the most commonoxidation state, first ionization energy, second ionizationenergy.

Q: Lithium salts are often much less soluble in water than the corresponding salts of other alkali…

A: When the amount of substance dissolved in a solution is maximum which is suppose x then that amount…

Q: (a) What is the range of oxidation states shown by the ele-ments of Group 5A(15) as you move down…

A: (a)

Q: What are the oxidation states of manganese in the following series of oxides? MnO, MnO2, Mn2O3,…

A:

Q: Arrange the following oxides in order of increasing acidity:CO2, CaO, Al2O3, SO3, SiO2, P2O5.

A: To arrange the above oxides in the increasing order of acidity, a thumbrule to remember is: The more…

Q: Determine the oxidation number of lead in each ofthe following oxides:PbO, PbO2, Pb2O3, Pb3O4.(b)…

A: The oxidation number of lead in PbO O has oxidation number -2, and lead have x oxidation number  x…

Q: Given MnO2, FeCl3, Pt, and Ni, which would you select for decomposing KClO3 to give O2?

A: Catalyst is chemical substance that enhance the rate of chemical reaction but itself remain…

Q: Write the chemical formula for each of the following, and indicate the oxidation state of the…

A: Oxidation State/Number- During bond formation atoms carries a charge called as Oxidation…

Q: Rank the following oxides in order of increasing aqueousacidity:Ga₂O₃, Al₂O₃, In₂O₃.

A: Step :1           Ga₂O₃, Al₂O₃ are amphoteric oxides ( reacts with both acids and bases) and In₂O₃is…

Q: 7.125 To prevent the formation of oxides, peroxides, andsuperoxides, alkali metals are sometimes…

A: Lithium shows anomalous behaviour in the first group of alkali metals because of its small size,…

Q: (ii) Arrange the group VII elements in order of increasing oxidizing strength. Explain the trend.…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: Which oxide, CrO3 or CrO, is more acidic in water? Why?

A: To determine the nature of oxide whether it is acidic or basic, we have a general observation that…

Q: Which of the follwing statements about the Group VII (Group 17) elements (Nuorine to iodine) is NOT…

A: A)   order of electronegativity oh galogens  F > Cl > Br>  I  electronegativity decreses…

Q: Explain each of the following observations: (a) At roomtemperature I2 is a solid, Br2 is a liquid,…

A: (A) I2 has atoms which have the highest atomic radii in their family, and thus they have higher…

Q: Rank the following oxides in order of increasing acidity inwater: Sb₂O₃, Bi₂O₃, P₄O₁₀, Sb₂O₅.

A: The acidic strength of an oxide increases with the increase in oxidation state of central atom in…

Q: Consider the following three statements about the reactivityof an alkali metal M with oxygen gas:(i)…

A: Given statements,    (i) Based on their positions in the periodic table, the expected product is the…

Q: Compare and contrast the chemistry of group 1 elements with that of group 2 on the basis of  the…

A: 1) compare of oxides of group 1 and 2 elements - Group 1 metals are very reactive with oxygen and…

Q: Which one of the following oxides reacts with bases (alkalis) but does NOT dissolve in water at all?

A: The reactions which are takes place with alkali solution NaOH is

Q: State reasons for the following observations: (i) The enthalpies of atomisation of transition…

A: Transition elements have high effective nuclear charge and a large number of valence electrons.…

Q: Magnesium carbonate is soluble in water (100 mg / L) whereas strontium carbonate is only slightly…

A:

Q: As described in Section 7.7, the alkali metals react withhydrogen to form hydrides and react with…

A: Alkali metals are the elements of the periodic table placed in group-1. They are most…

Q: The prefix eka- comes from the Sanskrit word for “one.”Mendeleev used this prefix to indicate that…

A: Eka-manganese was the name given to the element which is below manganese in the periodic table.

Q: Hydrogen is by far the most abundant element cosmically. Ininterstellar space, it exists mainly as…

A: Hydrogen is the simplest element containing only one proton and one electron. The molecule of…

Q: The most important oxides of iron are magnetite, Fe3O4,and hematite, Fe2O3. (a) What are the…

A: Oxidation state is referred as the  total no. of electrons lost or gained by the atom to form a…

Q: Explain the following :(a) The enthalpies of atomization of transition metals are quite high.(b) The…

A: a. The effective nuclear charge is large and high number of valence electrons of transition elements…

Q: Explain the observation for the increasing stability of the n+2 oxidation state in the heavy main…

A: Answer - A heavy element is an element with an atomic number greater than 92. The first heavy…

Q: (i) Thermal stability of hydrides of group 16 elements decreases downthe group. Why?(ii) Compare the…

A: i) The thermal stability of the hydrides of group 16 elements decreases down the group, i.e., H2O…

Q: Which of the following statement(s)is/are correct concerning Group 17(Group VII) elements? They will…

A: The elements present in Group 17 (Group VII) are F2 - Fluorine Cl2 - Chlorine Br2 - Bromine I2 -…

Q: The most important oxides of iron magnetite, Fe3O4, and hematite, Fe2O3. What are the oxidation…

A: Oxidation number is the total number of electrons an atom loses or gains in order to form bond with…

Q: Elemental C has one of the highest atomization energies on the periodic table at 717 kJ/mol. Explain…

A: Possible reasons for High ionisation energy are larger effective nuclear charge, smaller size and…

Q: Consider the given Ellingham diagram. At 1000 °C, which among Mg, Al, and Zn can be extracted from…

A: Given:  Ellingham diagrams are plots of standard free energy change versus temperature for the…

Q: Would the reaction of beryllium, Be, with oxygen be more or less vigorous than ba?

A:

Q: Which oxide, Mn₂O₃ or Mn₂O₇, is more basic in water?Why?

A: An acidic oxide is considered as an oxide that reacts with water to deliver an acid. The basic…

Q: (a) What is the lanthanide contraction? (b) How does it affectatomic size down a group of transition…

A: Lanthanoid contraction, in chemistry, is the steady decrease in the size of the atoms and ions of…

Q: Write a balanced equation for the reaction that occurs ineach of the following cases: (a) Potassium…

A: The reaction between potassium metal and chlorine gas result in the formation of potassium chloride…

Q: Alkali earth metals exhibit the following except a. They react by losing two electrons b. Their…

A: 1. Answer - The correct option is (d) d. These metals react with base to form hydrogen gas.…

Q: Some metal oxides, such as Sc2O3, do not react with purewater, but they do react when the solution…

A: Sc2O3 reacts when the solution is acidic. The balanced chemical reaction is:

Q: (a) Mention the optimum conditions for the industrial manufacture of ammonia by Haber’s process. (b)…

A:

Q: There have been some predictions that element 114 willbe relatively stable in comparison with many…

A: The electronic configuration for 114 elements can be given as follows: [Rn] 5f14 6d10 7s2 7p2 It is…

Q: Give the oxidation state of the metal for each of the following oxides of the first transition…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Write a molecular formula for each compound, and indicatethe oxidation state of the group 5A element…

A: Phosphorous Acid Molecular Formula of Phosphorous Acid is H3PO3. Ions Present in Phosphorous Acid…

Q: Alkaline earth metals are involved in two key diagonal rela-tionships in the periodic table. (a)…

A: (a) Two alkaline earth metals; Be and Mg exhibits diagonal relationship. The pair of elements are…

Q: Which group(s) of the periodic table is (are) described byeach of the following general…

A: (a)

Group 14 Elements

The following elements come under group 14 of the periodic table.