Strontium crystal has a mass density of 2.64 g/cm' and a molar mass of 87.62 g/mol Estimate the free electron concentration of Sr crystal

Q: the Tetragonal system.

A: (2)Tetragonal system is one of the structural categories to which crystalline solids can be…

Q: Rank the following in order of increasing electrical conductivity, and explain your ranking: Po, S,…

A: The electrical conductivity represents the ease by which electric current can pass through a…

Q: Is each oxide basic, acidic, or amphoteric in water: (a) MgO; (b) N₂O₅; (c) CaO; (d) CO₂; (e) TeO₂?

A: Since we answer only upto 3 sub-parts so we'll answer first three sub-parts. Please resubmit the…

Q: Which of the following statements is true about hydride ions or compounds?   Among second-row…

A: Answer

Q: Consider the figures above , which most likely to be silicon doped with Galium? * A B D В O c

A: Which likely Si doped with Ga?

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

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Q: Using the MO energy-level diagram for CO , specify the HOMO & LUMO for CN ion Select one: O 2p & n…

A: Molecular energy diagrams are used to represent energy levels of a molecule, it shows the formation…

Q: Give two examples of ferromagnetic substances?

A: Two examples of ferromagnetic substances are to be given.

Q: Transition metals have a tendency to form complex compounds, interstitial compounds and alloys.

A: ANSWER

Q: Which alkali metal has maximum ionic mobility in aqueous solution?

A: Alkali metals exits as hydrated ions in aqueous solution.As the size of the metal ions increases,…

Q: sketch a diagram showing the formation of energy levels from the valence orbitals for Li, Li2, Li3,…

A: Diagram showing the formation of energy levels from the valence orbitals for Li, Li2, Li3, Li(n). On…

Q: Predict the reaction of Cr2+, Fe2+, Cl-, HClO, Zn(s) when blowing air into an acidic aqueous…

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Q: An unknown metal with atomic radius of 0.175 nm forms an SCC structure. What is the density of the…

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Q: Define d ―p bonding. ii. Why C≡N¯ can accept the electron from the d orbital in metal central?

A: i) dπ - pπ bonding = It is a special kind of bonding in which, electrons are donated from filled p…

Q: Which of the following N-containing compounds does N have the highest oxidation state, and why? A.…

A: The Oxidation states for the given compounds can be calculated as: A. Fe(NO3)3…

Q: Element Tm /K 371 923 933 Explain the following in terms of structure and bonding i) i) ii)…

A: Melting point of metals depend upon the strength of metallic Bond.

Q: Trace amounts of Fe3+ ions in _ give amethyst its characteristic purple color. A) AI̟O, B) diamond…

A: Given : Amethyst and Fe3+ ions To find : Composition of amethyst  Solution : Amethyst are generally…

Q: 2. Write the equations showing disproportionation reactions of the monovalent ions of the following…

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Q: Tarnishing of lanthanides occurs due to the formation of their Salts O Acids Oxides

A: In the modern periodic table, Lanthanides are rare earth elements. The atomic number of these…

Q: 8a) Sketch a diagram showing the formation of energy levels from the valence orbitals for Rb, Rb2,…

A: a). We are given a crystal of Rb The formation of energy levels from the valance orbitals for Rb,…

Q: Why KMNO, is stored in amber colored bottles?

A: Amber coloured bottles have an ability to filter UV (ultraviolet) radiation thereby protect the…

Q: S406 → 2S20;- 6 O 2 4 O 1 O 3

A: The unbalanced skeleton Chemical equation given in the question is - S4O62- -----> 2S2O32- The…

Q: Using data from Appendix E, calculate the equilibrium constant for the disproportionation of the…

A: Cu+(aq) -----------------> Cu2+ (aq) + e-            E0 = -0.15v Cu+ (aq)+ e- --------------->…

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: Which element has the largest bonding atomic radius: Sc,Fe, or Au?

A: In the periodic table the elements are arranged according to their periodicity properties. These…

Q: The following structure represents the structure of: Select one Rock salt ODiamond wurtzite O…

A: The central atom in the tetrahedral geometry is linked to four surrounding atoms. All of these are…

Q: . What experimental evidence would allow you to determine whether TiCl4 is an ionic compound or a…

A: Oxidation state of Ti in TiCl4 is as follows: x+(-1×4)=0x=+4

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: What is the oxidation state of molybdenum in [n³-C6H6)Mo(CO)3]Cl? (atomic number of Mo is 42) a. +4…

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Q: Does roasting increase or decrease the mass of sulfides?

A: During the roasting of sulfide ores , sulfides are converted into oxides and sulfur is converted…

Q: Draw orbital diagrams for the following atoms and ions. Explain a) Sulfer b) Sulfide (2- charge)…

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

Q: Covalent Ionic Metallic Hydrogen   What is the protective coating that helps some metals react…

A: Covalent bonding is the key to the crystal structures of the metalloids.

Q: How many grams of chromic sulfide will be formed from 1.5 kg of chromic oxide according to the…

A: 2 Cr2O3 + 3 CS2 = 2 Cr2S3 + 3 CO2 This will be the required balanced chemical equation, Given,…

Q: Which of the chemicals is necessary for halogenation?   a AlCl3   b SnCl2   c CuCl2   d NBS

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Q: For magnesium, the first ionization potential is 7.6 eV; the second (the additional energy required…

A: The atomic number of magnesium is 12. Its electronic configuration is 1s22s22p63s2.The first…

Q: Which following element has the condensed electron configuration [Ar] 4s? 3d ? Lütfen birini seçin:…

A: The element with electronic configuration of  Ar4S23d3 has to be identified.

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: Why K2O is diamagnetic in nature?

A: K2O form superoxide ion O2- in which there is an unpaired electron present in anti-bonding orbital.

Q: Many lithium salts are hygroscopic (absorb water), whereas the corresponding salts of the other…

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Group 14 Elements

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