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

Q: 1. Metals are bonded by metallic bond, that is protons in a sea of electrons which give them their…

A: Given:

Q: 12. (3) How does a nucleus for a semi-crystalline polymer form crystalline nuclei, and how do they…

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: A- demonstrate the crystal structures of Bi2Te3   B- provide the figures of Miller planes 100,…

A: The crystal structure of Bi2Te3 is rhombohedral tetradymite-type with the space group R-3m, and is…

Q: Which materials are best suited for discharging excess static charge on your clothing during winter,…

A: Since we know that  a conductor are the materials which allows electrons to move freely  where as an…

Q: Please answer the ff questions and clear your answer. a. Why are most atoms held by chemical bonds.…

A:

Q: B. Using the concept of intermolecular forces of attraction, explain why butter melts at room…

A: B.) There are van der waals forces of attraction present between the molecules butter. When butter…

Q: List 3 composite materials that uses covalent bonding and ionic bonding. 3 each per bonding

A: A material that is made by combining two or more substances that have different physical properties…

Q: Electrons in a strong magnet....

A: ANSWER

Q: In its natural form,_______ is in the form o blue crystals.

A: The question is based on the concept of inorganic chemistry. We have to identify the compound whose…

Q: Gold forms a face-centered crystal structure and has an atomic radius of 2.75 x 10-$ cm. Compute for…

A:

Q: STREAK 1 STREAK 2 STREAK 3 ck smaple based on its physical characteristics using the provided…

A: Question 1: The rock is made up of crystal grains with flat shiny surfaces. Hence, option A is the…

Q: 8)Why measuring melting points?

A: You have a good question

Q: نقطة واحدة نقطة واحدة can be heating and ......33 .reshaped is A. Thermoset. O B. Thermoplastic. O…

A: Thermoplastic polymer are those polymer which can be reshaped by changing the temperature is called…

Q: Copper is a common metal used in electrical circuits. Why are metals like Cu generally good…

A:

Q: 1.) At room temperature the electrical conductivity and the electroh obliity for copper are 6.0x107…

A:

Q: State whether each sentence is true or false: ________ 17(a) Metals have high electrical…

A: Two unique properties of metals are their high electrical conductivities and thermal conductivities.

Q: Crystalline structures vs metallic structures have similarities and some differences.is it true that…

A: Introduction:  We have to predict statement is true or false .

Q: Suppose that a semiconductor device is using a 8.41-mg sample of a hypothetical element By, that is…

A: Atomic mass of hypothetical element By is 33.916 g mol-1 Given mass of By is 8.41 mg  That is…

Q: When you test a sample of tap water, the lightbulb of the conductivity apparatus glows bright why?

A: When we test a sample of tap water, the light bulb of the conductivity apparatus glows bright. Hence…

Q: A student heated a few crystals of copper sulphate n a dry boiling tube.(a) What will be the color…

A:

Q: Water is different than ice in that Select one: a. ice contains hydrogen bonds while water does not…

A:

Q: 19/22 refers to a joint that is

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Q: Write the equation for Bragge's law?

A: Introduction: Braggs law shows the relation between the spacing or distance of atomic planes in the…

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

A: The given options are,

Q: water

A: Dear student I have given answer to your question in the image format.

Q: What are semi-conductors?

A: Conductors are those substances which allow heat or electricity to pass through it while insulators…

Q: Explain how metals conduct electricity.

A: Explain how metals conduct electricity.

Q: 4. Why metals are electrical conductors?

A: Metals are good electrical conductors.  because there are free held loose electrons are present in…

Q: why would wrapping fruits and vegetables slow the rate of discoloration?

A: Given : Wrapping fruits and vegetables slow the rate of discoloration. To find : Reason why wrapping…

Q: Which of the following substances would most likely contain metallic bonding? a. An organic…

A: Metals are good conductor of heat and electricity whereas non metals are bad conductor of heat and…

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: 4. Sodium forms a body centered cubic crystal. Calculate the density of sodium metal. Propose a…

A: In a body centered cubic crystal: Body diagonal=4r where r is atomic radius of atom Density=ZMa3NA…

Q: Which is NOT true about diamonds? a. Diamonds are stable even under extremely hot temperatures. O b.…

A: The explanation is given below-

Q: 9. The density of Al is 2.7 g/cm³ and that of Al2O; is about 4 g/cm³. Describe the characteristics…

A:

Q: The substance with the formula S8 is a/an:

A: The chemical formula S8 is an octasulfer inorganic chemical

Q: Explain process of doping with example

A:

Q: Calculate the mass of Nal that would be necessary to yield the same conductivity as the NaCl…

A: Given , mass of NaCl = 0.1 g mass of NaI =0.1 g

Q: Explain why Mg experiences a greater Zeff than does P.

A: Effective nuclear charge can be calculated using Slater's rule.

Q: Why polycrystalline form of a material is stable than single crystalline form?

A: All matter can be classified as solid, liquid, and gases mainly. In these physical states of matter,…

Q: How do the appearances of metals, semiconductors and insulators differ? Why?

A: A question based on conductivity property, which is to be accomplished.

Q: How is "hard" water made "soft"? Explain why that process works.

A: Interpretation -  To explain how "hard" water made "soft" -      Introduction -  The process by that…

Q: ng your own words explain why ceramics are stronger and stiffer than polymers

A: Polymers can be defined as a large macromolecule made up from large number of monomers

Q: In the future, metals may be discovered that are even softer than very soft metals such as Au or Hg.…

A: The HSAB principle put forward by Pearson states that, soft acids react faster and form stronger…

Q: How

A: Dear student I have given answer to your question in the image format.

Q: 24. A solid is insoluble in water, does not conduct electricity, and does not melt below 1000°C.…

A: Inorganic chemistry:

Group 14 Elements

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