Atomic force microscope can be used to image: a. Only semiconductor nanomaterials b. Only insulating nanomaterials c Only conductive nanomaterials d All of them

Q: Explain Atomic Spectra.

A: There are two types of atomic spectra: Emission spectrum of an element is defined as the spectrum of…

Q: The is the electron-emitting element of a tube.

A:

Q: What is nichrome? State its one use

A: Nichrome is a type of alloy material. It is obtained from nickel, chromium, iron and manganese. The…

Q: In each case, identify the element in question.(a) The mass number of an atom is 234, and theatom…

A:

Q: Go through the first 20 elements in the chart.  Note and record which orbital contains the…

A: Atomic number Name of the atom Electronic configuration 1 Hydrogen 1s1 2 Helium…

Q: Describe  all the atomic substructures of matter and their role

A: An atom is only visible in the electron microscope. Matter means anything that occupies some spaces…

Q: In a scanning electron microscope, select the correct answer Select one: O a. can be used to image…

A: In a scanning electron microscope, the electron beam can penetrate through all the sample

Q: spectra can be broadly classified into two categories. They are: a.) Atomic and molecular spectra…

A: Required : Classification of spectra :

Q: Choose the best answer to the following: How many electrons are there in the third shell of sodium,…

A: Answer:  b

Q: A small cube of iron is observed under a microscope. The edge of the cube is 3.00 x 10-6 cm long.…

A: Given :     Edge of the cube, a = 3 x 10-6 cm     Atomic mass of iron, m = 55.9 u     Density of…

Q: Describe the electron states in materials and how electrons are transferred between them

A: Electron state in material is explained by its electron configuration and quantum state of each…

Q: 214Po84 --> __________  +  4He2

A: Reaction :         214Po84= 210Pb82+4He2

Q: Fill in the blanks with suitable words: 4. When the energy difference between two atomic or…

A:

Q: Which element is a member of the halogen family? A B B I D K

A: In this question we are have to answer which element is a member of the halogen family.

Q: true or false why? 4. Harmonic oscillator model does not provide explanation for dissociation of…

A: 1. Harmonic oscillator model does not provide explanation for dissociation of molecules This…

Q: Name the key components that are required for a solution-based approach to synthesize nanoparticles.

A: 12 methods are listed below——

Q: The atom in its natural state is electrically negative charged. True or false, justify your answer

A: The atom in its natural state is electrically negative charged. False statement. The positive…

Q: Gold nanoparticles can be used for hyperthermia. To increase their temperature, one can use Select…

A: Gold nanoparticles can be used in hyperthermia. As gold is a noble metal therefore it is compatible…

Q: The density of sodium is 0.97 g/cm3 Calculate its atom density

A: Given, The density of sodium is 0.97 gcm3 We know, Molar mass of sodium is 23.0 gmol  Avogadro…

Q: 2. What are metalloids? a. the metal elements with small atomic numbers b. the elements between…

A: Correct answer is b) the elements between metals and nonmetals on periodic table. Explanation: A…

Q: Molybdenum has an atomic radius of 0.145 nm. The volume of its cubic unit cell is 0.0375 nm3 . What…

A: radius (r) = 0.145 nm Volume = 0.0375 nm3

Q: 2. Spectrum of the specific wavelengths at which compounds absorb 4. is measured in the…

A: Answer 2 : Absorbtion is maximum at around                      510 nm at which all subjects…

Q: Sketch a model of Carbon-13 with a (-2) charge. - Include the number of protons, neutrons, and…

A: Carbon-13 is an isotope of carbon that contains 6 protons, 7 neutrons and 6 electrons. It has no…

Q: Iodine-131 is often used to treat Graves' disease or hyperthyroidism. In Graves' disease the thyroid…

A: Note that the half-life (T) of 131I is approximately 8 days. Let the initial amount of 131I at the…

Q: EXplain Electron microprobe analysis and how it works

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Q: Gold nanoparticles can be used for hyperthermia. To increase their temperature, one can use Select…

A: Laser is good source of coherent light i.e. focusing on target and can be used to increase…

Q: What is the frequency of light that allows an electron to be liberated from a metal that has a work…

A: Work function of a metal = 4.136 eV We have to find the frequency of light that allows an electron…

Q: what is a homogenious and what is a heterogenious?

A: a) homogeneous is some thing which is uniform through out the object  milk and water mixture it is…

Q: A drug has a half-life of 6 hours. The drug is administered by I/V injection, and immediately after…

A: Half-life is the time required for a quantity to reduce to half of its initial value.…

Q: Define electronegativety

A: Electronegativity: Electronegativity is the functional ability of an atom to attract from the…

Q: Comple.. e table below, using the diagram of an atom shown at right. Properties of subatomic…

A:

Q: Indexing pattern analysis refers to hkl values and the number and type of atoms per unit cell. * O…

A: Given : Statement related to the index pattern analysis and asked whether true or false.

Q: Which of the following would affect atomic spectra? A 16 The element involved The atom's state of…

A: Spectra are produced when the exictied electrons are drop from the higher state to the ground state.…

Q: 1.3 How many electrons , protons and protons are there in carbon-13 , 13C

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Q: QUESTION 77) Which of the following is not a factor that affects the shapes of nanoparticles? a)…

A: Dear student, Since all questions are different therefore as per guidelines we can author only first…

Q: Nuclear sizes are expressed in a unit named A. Fermi B. angstrom C. newton D. tesla

A: Option (A) Fermi is the correct answer.

Q: Chromium is BCC crystal structure and has atomic weight of 52.0 g/mol and density of 7.19…

A:

Q: Number of valencies in an Oxygen atom

A: The valency of an atom depends on the number of valence electrons in that atom. It is defined as the…

Q: The value of Z in the element symbol below is called the Atomic Number and determines what type of…

A: Required :  The value of Z in the element symbol below is called the Atomic Number and determines…

Atomic Number

Elements are the building blocks of all the matter that exist in the universe. Every element is made up of atoms that have protons, electrons, and a nucleus. In order to know the difference between the elements, an atomic number is used. Every element has its own individual atomic number. The atomic number is a single most important characteristic of an atom.