Absorption Spectrum of PABA

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

A:

Q: Why is Visible radiation able to remove electrons from sodium but not from zinc?

A: Photoelectric effect: It states that the when light falls on a metal surface it emits electrons.…

Q: Describe the process taking place within an atom that leads to the emission of light.

A: Atom consists of electrons revolving around the nucleus in different shells when they are stable…

Q: Order the following elements by increasing atomic radius according to what you expect from periodic…

A: In the periodic table as we move from left to right the atomic radius decreases.Arsenic(As)is a…

Q: Which element has the lightest atoms?

A: The element that has the lightest atoms is hydrogen.

Q: zeeman effect on fine structure of atom?

A: Zeeman effect is the splitting of the atomic spectral lines in the presence of an external magnetic…

Q: The radiation emitted by the sun in wavelength - between 1=0.1 pm and 2=100 µm is called 1) Thermal…

A: Visible radiation has wavelength from 380 nm to 700 nm.  So,  this is incorrect option.

Q: What principal advantage does an electron microscope have over an optical microscope?

A: Given: electron microscope , optical microscope

Q: what is the difference between a photocell and a photodiode?

A: Photocell: It is Light Dependent Resistor 'LDR'. This device is based on photovoltaic effect or…

Q: How do electrons fill energy orbitals?

A: The electrons fill the atomic energy orbitals in a certain pattern depending on the energy of the…

Q: Find Vrms of an element that has a Vrms = 1/ BRT mass of 36 atomic mass units at a temperature of…

A: Given that,                 The mass of the element is 36 atomic mass unit.                 The…

Q: Explain a couple of differences between the model of an atom with the nucleus sitting in the center…

A: Atom consists of nucleus sorrounded  with electron's

Q: What is rectifier?

A: The rectifier is an electrical device that converts alternating current (AC) to direct current (DC).…

Q: What causes dust particles and tiny grains of soot to move with Brownian motion?

A: Dust particles and tiny grains of soot move with Brownian motion. The Brownian movement is the…

Q: Mr. Muscedere accelerates an ELECTRON from left to right so that it leaves the electric field with a…

A:

Q: Explain difference between SPECT and PET?

A: SPECT: Single photon emission computed tomography. PET: Positron emission tomography Both SPECT and…

Q: State two similarities and two differences between optical atomic emission spectra and X-ray…

A: SIMILARITIES: 1) Both the spectrum has absorption spectra and emission spectra.  2) To form optical…

Q: Part A In a photoelectric-effect experiment, the maximum kinetic energy of electrons is 3.2 eV .…

A: According to Einstein's photoelectric equation Maximum kinetic energy = h (ν-ν₀)

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: When ultraviolet light falls on certain dyes, visible light is emitted. Why does this not happen…

A: Given: When ultraviolet light falls on certain dyes, visible light is emitted. Why does this not…

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: What element has the lightest atoms?

A: Hydrogen has the lightest atoms. Its atomic number is 1 and its atomic mass is 1.00794 amu. It has…

Q: Suppose that, at time t, the position relative to the origin of a particle moving along a line is…

A: (A) The particle travels more than 4 meter in the first three second. displacement=Area under the…

Q: There are three vials, one contains a regular, one a phosphorescent, one a fluorescent dye of the…

A: Given  Three dyes one is regular one a phosphoroscent and the third one a fluroscent. We have to…

Q: 1: Desive the yelation A8= ncpIn)-nRL(P Ti Hint: use enthailpyrelation

A: Entropy: The change in the entropy is given by; ∆S=∆QT∆S=Heat absorbedAbsolute temperature

Q: Select the elements that are ranked correctly from largest to smallest first ionization energy. F,…

A: Option C is the right answer  F, Cl, Br, I

Q: is threshold easy to imitate? false or true

A: Questions based on false and true statement

Q: What to look for in an NMR spectrum--A-- CS---------, CC

A: NMR spectroscopy is used to find the properties of the organic molecules and is only applicable to…

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: