Which of the following is not an allotrope of phosphorus? A) red phosphorus B) white phosphorus C) orange phosphorus D) black phosphorus

Q: Sulfur

A: Sulfur is a non-metal element present in periodic table of Group 16.

Q: Why do helium and lithium exhibit very different chemical behavior, even though they differ by only…

A:

Q: 4. The wrong statement about VA group Hydrides is

A: The term hydride is used after a binary compound when an element react with hydrogen

Q: Give the name and symbol or formula of a Group 6A(16) element or compound that fits each description…

A: a) Unstable allotrope of oxygen = The unstable allotrope of oxygen is Ozone. Ozone is a gas present…

Q: Calculate the radius of a tantalum atom, given that Ta has a BCC crystal structure, a density of…

A:

Q: Give the name and symbol or formula of a Group 4A(14) element or compound that fits each description…

A: (a) (b)

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: Graphene is a new material made from carbon atoms. It is the thinnest and strongest material known.…

A: In this question, we have to answer why Graphene is strong and conducts Electricity. Also, we have…

Q: Give the name and symbol or formula of a Group 6A(16) element or compound that fits each description…

A: The elements of group 16 are given as follows: Oxygen (O) Sulfur (S) Selenium (Se) Tellurium (Te)…

Q: Give the name and symbol or formula of a Group 3A(13)element or compound that fits each description…

A: Group IIIA elements are: Boron, Aluminum,Gallium ,Indium and Thallium. The general electronic…

Q: Carbon is used in countless ways in a modern automobile, with the most visible use being carbon…

A: From bicycles to backpacks, carbon fibre is a popular material for high-end and long-lasting…

Q: (ii) In Complete the table below giving the formulae of the oxides of the elements Element Li Be в C…

A: The question is based on the concept of periodic  properties of elements. we have to write formula…

Q: Explain the following in terms of structure and Magnesium has a higher melting temperature than…

A: The electronic configuration of Sodium ( 11Na ) - 1s2, 2s2,2p6,3s1 Magnesium (12Mg) -1s2,…

Q: Compare graphite to diamond based on: a) Structure b) Conductivity c) Density d) C-C bond length e)…

A: Here we have to compare difference between graphite and diamond.

Q: What type of bonding do metalloids generally do to form crystal structures? Covalent lonic O…

A: Covalent bonding is the main bonding to form the crystal structures of the metalloids. In this case…

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: What is a tetrahedral hole?

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Q: Why is red phosphorus denser and less chemically reactive than whitephosphorus?

A:

Q: is iron (II) ion diamagnetic or paramagnetic?

A: Paramagnetic Or Diamagnetic nature is decided on the basis of unpaired electrons.

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: 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: Does aluminum chemically bond with sodium

A: A cation and anion make bond with each other.

Q: Boron forms an extensive series of hydrides. If you isolate a new hydride that is 81.1% B, a…

A: In given molecular formula % of boron determine by  using molecular weight of boron and hydrogen

Q: An is a magnet that is created by wrapping a current-carrying wire around a ferromagnetic. O a…

A: Given answer of choices, a. electromagnet b. electric motor c. electric current

Q: Why is boron less chemically reactive than beryllium

A: Electronic Configuration of boron(B)- 1s22s22p1     (2,3) Electronic Configuration of Beryllium(Be)-…

Q: .Give the name and symbol or formula of a Group 6A(16)element or compound that fits each description…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3 sub-parts. Please resubmit the…

Q: Give the name and symbol or formula of a Group 7A(17)element or compound that fits each description…

A: Hello. Since the question contains multiple subparts the first three subparts are solved. In case…

Q: Why carbon does have a larger tendency of catenation than silicon although they have same number of…

A: To explain why carbon has a higher tendency of catenation than silicon even after both have the same…

Q: If galena (Pbs) was defined by metallic bonds ,calculate the radius ratio between the two elements…

A: Introduction: The radius ratio is the ratio of the cation (smaller ion) and that of the anion…

Q: 6. Why hydrides of Germanium are known as silanes germanes stannum plumbane

A: Answer The hydrides of Germanium are most useful compounds

Q: Q.5(a) The alkali metals follow the noble gases in their atomic structure. What properties of these…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first 3 sub-parts of…

Q: Which of the following is a reason why the first member of the nonmetal groups tends to exhibit…

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Q: Sodium chloride and strontium chloride are both white solids. How could you distinguish one from the…

A: Na and Sr belong to Group IA and IIA in the periodic table respectively. They have a valence…

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: o a.2+ Са 2+ 2+ <K + < Mg <Ве • b+ 2+ 2+ 2+ K <Ca <Mg <Be 2+ 2+ C.2+ <K <Mg <Be + Be d. 2+ 2+ <K <Ca…

A: 2. Answer - The incorrect option is (d) Low melting and boiling point  Explanation - According to…

Q: boron hydrides were once evaluated for possible use as rocket fuels. Complete and balance the…

A: The combustion reaction given is  B2H6 (g) + O2 (g) ----&gt; B(OH)3 (l)

Q: (b) Is boron a metal or a non-metal? Give reasons for your answer. (c) Why is aluminium a useful…

A: Element can be classified as metal and non metal

Q: Write detailed answers to the following. a. What are different stages of the development of…

A: Given: a) Periodic table b) Carbon, nitrogen and oxygen To find: a) different stages of periodic…

Q: Why do alkaline earth metals have low ionization enthalpy?

A: Solution;- Alkaline earth metals have the lowest ionization enthalpy

Q: The figure below shows 3 hypothetical ionic structures with different cation/anion radius ratios.…

A: To check the stability of ionic compounds , we consider the radius ratio of cation and anion .  For…

Q: Give the name and symbol or formula of a Group 5A(15)element or compound that fits each description…

A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: A 330 KJ/mol is the sublimation energy of aluminum, and its atomic radius is 118 pm. Discuss…

A: Do decahedron has only 12 faces but they are Pentagons.  Icosahedron has only 20 triangular Faces.…

Q: 12. Which nitrogen has the highest electron density? HN Н2 А. 1 В. 2 С. 3 D. 4 IZ ZI

A: Ans: C, the nitrogen labelled with 3 has highest electron density

Q: 15. Write balanced equations for the reactions between each of the following oxides and water: (a)…

A: Among the given oxides, lithium oxide (Li2O) and calcium oxide (CaO) are metal oxides which are also…

Q: 8. A 330 KJ/mol is the sublimation energy of aluminum, and its atomic radius is 118 pm. Discuss…

A:

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.