MCQ 19: Group IV clement that acts as an insulator is A. Carbon (Diamond) B. Tin (Sn) C. Lead (Pb) D. Silicon (S)

Q: How does the electron structure of an isolated atom differ from that of a solid material? Select the…

A: The electron structure of an isolated atom differ from that of solid state in the following ways: In…

Q: Which of the following is NOT bent? Select one: a.O3 b.NO2– c.SO2 d.SiO2

A:

Q: Metals have high melting point because a. the electrons are mobile b. of close-packed arrangement…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: MCQ 72: Metals are good conductors due to A. ionic lattices B. crystalline lumps C. mostly solids D.…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: A. small amount B. large amount C. medium D. stable

A: The question is based on the concept of metalloids. these are one of the categories of elements…

Q: a. Metal or Nonmetal Explanation: State of Matter b. Metal or Nonmetal Explanation: Luster Metal or…

A: Given that : We have to give an explanation for both metals and non-metals on the basis of :

Q: 13. Describe what is London Dispersion forces, Dipole-Dipoie bonds. 14. What is the difference in PE…

A: Hi, as you have posted multiple questions and have not mentioned which question you want us to solve…

Q: nonmetal element X in their standard states. Based of the table (picture): A. What is the lattice…

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Q: What is a tetrahedral hole?

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Q: Element X has an electron configuration 1s22s22p1. The formula of the choride formed with element X…

A: The electronic configuration of an element helps in the determination of the number of electrons,…

Q: Which of the following is mismatched?   a. Mg - p block b. S- p block c. Na - s block d. Fe - d…

A: Given, a. Mg - p block   b. S- p block   c. Na - s block   d. Fe - d block   Which of the following…

Q: Which one of the following statements is correct? A. All metals are shiny and can conduct…

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Q: Explain the term crystal radii?

A: Crystal radius (Metallic radius) is one-half of the distance between the nuclei of two adjacent…

Q: MCQ 99: The highest melting point in Group-II elements is of A. Be B. Ba C. Ca D. Mg

A: * Group ll are alkaline earth metal  * As we move down the group  atomic radius increases, hence…

Q: what are the changes in chemical properties in nanomaterials?

A: The question is asking about the changes in chemical properties that occur when materials are…

Q: D. Ascorbic acid, amalgam, salt

A: 1. (D)  Ionic substance conduct electricity when molten (liquid) or in aqueous solution (dissolved…

Q: The structure of graphite, the most common carbon polymorph, is illustrated in figure. A. Explain…

A: STRUСTURE  ОF  GRАРHITE Grарhite  is  а  big  соvаlent  struсture  with  eасh  саrbоn  аtоm  is…

Q: elect among the statements below the ones which are TRUE. There may be more than one true statement…

A: 1) Two options are TRUE.  Statement (a) and (e)

Q: MCQ 121: With an increasing atomic number of Halogens, the A. Van der Waals forces decrease B.…

A: The given options are,

Q: What makes carbon such a unique element? a. Elemental carbon comes in two forms, diamond, and…

A: Atomic number of carbon is 6.  It's electronic configuration is 1s2,2s2 2p2 Carbon can form four…

Q: Covalent bonded materials are found in all three states: solid, liquid and gas. Evaluate the reason…

A: Answer - Covalent bonded materials  - Covalent bonding is found in many ceramic structures such as…

Q: Which of the following compounds has the highest boiling point? hyopan 2 H Не Gaon ogen fnte 3 4 10…

A: Answer is explained below.

Q: MCQ 119: When magnesium is burnt on Bunsen burner it gives flame of color A. bright white B. off…

A: In this question we have to find out the color of flame when the Magnesium is burnt on Bunsen…

Q: FCC structure has highest formability. Why?

A: The ability of a given metal workpiece to undergo plastic deformation without being damaged is…

Q: Which of the following statements is/are true? I. Solids are compact but if melted it moves…

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Q: • How many valence electrons do aluminum atoms have? А. 1 В.3 С.7 D.5 • If a chlorine atom were to…

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Q: Lithium properties are as follows: Melting point: 450K Appearance: shiny Conducts electricity: Yes…

A: Lithium has atomic number 3 it has 3 electrons its electionic configuration is 1s22s1 it has one…

Q: 2. For each of the following pairs of substances, predict which member of the pair will have the…

A: Substance which has high forces of attraction between the atoms/molecules/ions has high melting…

Q: The chemical name for oil of vitriol is sulfuric acid. The chemical formula for sulfuric acid is…

A: The sulfuric acid is an inorganic acid, which is composed of Oxygen, Sulfur and Hydrogen with it.

Q: theoretical density

A: BCC(Body centered cubic) has 2 atoms.

Q: How is coal form? 2.what are the type of coal?  3.historically the Electricity Supply Industry…

A: Naturally, Coal is formed mostly of Carbon, with a little bit of sulphur, hydrogen, oxygen and…

Group 14 Elements

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