(b) Is boron a metal or a non-metal? Give reasons for your answer. (c) Why is aluminium a useful structural material even though it reacts readilywith water and oxygen? (d) What is the usual valence shown by elements of Group 13 in compounds?

Q: Compounds such as NaBH4, Al(BH4)3, and LiAlH4 are complex hydrides used as reducing agents in many…

A: (a) The oxidation state of each element in NaBH4 Al(BH4)3 , LiAlH4 has to be given.   NaBH4 Let x be…

Q: What correlation, if any, exists for the Period 2 elements between group number and the number of…

A: The number of electrons in an element is equal to its atomic number. In order to become stable an…

Q: As you move down Group 5A(15), the melting points of the elements increase and then decrease.…

A: Solution- An atom is mainly composed of three sub-particles; electrons, protons and neutrons. These…

Q: Compounds such as NaBH4, Al(BH4)3, and LiAlH4 are complexhydrides used as reducing agents in many…

A: (a) The oxidation state of each element in NaBH4, AlBH43, LiAlH4 has to be given. NaBH4 Let x be…

Q: Despite the expected decrease in atomic size, there is an un-expected drop in the first ionization…

A: Ionization energy is the energy that is required to remove an electron from a gaseous atom or ion to…

Q: Why is there objection in the use of Hydrogen Sulfide in group cations?

A:

Q: Of the elements Be, C, Cl, Sb, and Cs, which (a) has the lowestelectronegativity, (b) has the…

A: (a)

Q: ᴄᴀʟᴄᴜʟᴀᴛᴇ ᴛʜᴇ ᴅᴇɴꜱɪᴛʏ ᴏꜰ ᴘᴜʀᴇ ᴍᴇᴛᴀʟꜱ, ᴇxᴘʀᴇꜱꜱ ʏᴏᴜʀ ᴀɴꜱᴡᴇʀ ɪɴ ᴋɢ/ᴍ3 ᴀ. Iron @ ꜰʙᴄ ᴀɴᴅ ꜰᴄᴄ ʙ. ᴄopper…

A: The solution of the question is given below:

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

A:

Q: A halogen (X2) disproportionates in base in several steps to X- and XO3-. Write the overall equation…

A: Redox reaction leads to oxidation and reduction processes simultaneously. Oxidation and reduction…

Q: Qu) Are The elements sodium, aluminum, and chlorine are in the same period? And give the right…

A: The given elements sodium, aluminum and chlorine lie in the third period of periodic table. Their…

Q: How do atomic properties account for the low densities ofthe Group 1A(1) elements?

A: Alkali metals are the s-block elements belonging to the group IA(1) in the periodic table. The…

Q: Write the reaction quotient, Qc, for each of the following reactions:(a) The first step in nitric…

A: Reaction quotient is the ratio between the concentration of products and the concentrations os the…

Q: Describe the structure and bonding in silicon dioxide and carbon dioxide

A: Silicon dioxide consists of Si and O atoms. All atoms in SiO2 are bonded to each other by the…

Q: Outline the separation of the following groups of ions, leaving out all unnecessary steps a. Ag*,…

A: a.  Ag+ , Hg+2 belongs to group - I , where as co+2 belongs to group - IIIB b. All are from group -…

Q: Fluorine lies between oxygen and neon in Period 2. Whereas atomic sizes and ionization energies of…

A: The given data: The given elements are F, O, and Ne. To determine = The change in their…

Q: Is the reaction of rubidium with water more or less vigorous than that of sodium? How does the rate…

A: The chemical reactivity indicates the readiness of a compound to take part in a chemical reaction.…

Q: Would you expect rubidium metal to be more or less reactive with waterthan potassium metal?

A:

Q: Complete and balance the following equations:(a) An active metal reacting with acid,…

A: A chemical reaction is the symbolic representation of the conversion of substances to new…

Q: Why alkali metals donot exist as free in nature?

A: Alkali metals are s-block elements or 1A group elements.  These metals have only one electron in the…

Q: Diiodine pentaoxide (I₂O₅) was discovered by JosephGay-Lussac in 1813, but its structure was unknown…

A: a) The precursor, oxoacid is iodic acid and the reaction for formation of the oxide is given as…

Q: Nearly every compound of silicon has the element in the +4 oxidation state. In contrast, most…

A: Elements of a particular group shows similarities in physical and chemical properties. But there…

Q: Define the term, Boron?

A: Solution- Boron is a chemical compound which is found in nature. In the periodic table no of the…

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: Does sodium sulphide and calcium permanganate and iron oxide and nitride oxide and carbon fluoride…

A: In the given chemicals, sodium, calcium and iron are the metal ions.Calcium is an alkali metal and…

Q: The chemical reactivity and behaviour of boron differs substantially from the rest of the p-block…

A:

Q: Write balanced equations for the following reactions:(a) potassium oxide with water, (b)…

A: Balanced chemical equation of a reaction is written according to law of conservation of mass.…

Q: What oxidation states does Xe show in its compounds?

A: The oxidation number is the actual charge present on the atom in the compounds. Example: The…

Q: Qu) Are The elements sodium, aluminum, and chlorine are in the same period? And give the right…

A: Given: Q11.  Are the elements sodium, aluminium and chlorine are in the same period? a) which has…

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: In many ways, arsenate (AsO4 3−) is very similar to phosphate (PO4 3-), yet it does not substitute…

A: The reason behind arsenate not substituting phosphate in biomolecules although both elements are…

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: Cxygen and Tellurium are both chalcogens, however while oxygen form carbondioxide with carbon, a…

A: In the carbon dioxide and carbon ditelluride, the carbon and other elements form double bonds. The…

Q: Complete and balance the following equations:(a) An active metal reacting with acid,Al(s)+HCl(aq)→…

A: (a) Generally metals react with acids to form hydrogen and an ionic compound where the metal is the…

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

A: The chemical formula of Hydrogen telluride is :  H2Te

Q: Identify the following hydrides as ionic, metallic, or molecular:(a) B2H6, (b) RbH, (c) Th4H1.5.

A: As we move down the group - metallic character increases. Hence, Th has greater metallic character…

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

A:

Q: Would the reaction of cesium, Cs, with oxygen be more or less vigorous than K?

A: We are given two elements K and Cs

Q: Compounds such as NaBH₄, Al(BH₄)₃, and LiAlH₄ arecomplex hydrides used as reducing agents in many…

A: NaBH₄, Al(BH₄)₃, and LiAlH₄ (a) Give the oxidation state of each element in these compounds. (b)…

Q: Bismuth(V) compounds are such powerful oxidizing agents that they have not been prepared in pure…

A: All known elements are placed in the Modern periodic table in increasing order of their atomic…

Q: 4. What types of bonds, and how many bonds, will arsenic form with other elements?

A: Electronic configuration of arsenic is[ Ar] 3d¹⁰ 4s² 4p³

Q: Ionic hydrides are primarily compounds of hydrogen and nonmetals, in which the bonds are evidently…

A: Ionic hydrides are primarily compounds of hydrogen and nonmetals,   The above statement is not fully…

Q: What mass, in grams, of hydrogen gas forms during the complete reaction of 10.01 g of calcium with…

A: Given: Molar mass of Ca=40.078 g/ mol. Given mass of Ca=10.01 g

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

A: (a)