3 An e- in a hydrogen atam is hea->n=2, what's the wave length in nm?

Q: Because the electron volt energies limited our significant figures, we can only use our answer to…

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Q: Constants needed for the calculations: c = 3.00 x 108 meters/second Planck's Constant (h) = 6.63 x…

A: Using the formula for wavelength and energy to calculate energy.  Using wavelength to calculate the…

Q: The graph at the right shows the atomic radius for the19 elements in the periodic table.(a) Describe…

A: a.The edge of an atom's orbital determines its size. Orbital boundaries, on the other hand, are…

Q: In honor of the late Alex Trebek, your Chemistry class holds a Jeopardy tournament. The Final…

A: Since you have posted more than one question, we are doing first for you. To do the rest repost the…

Q: Which wavelength of light has the highest frequency?(a) 350 nm (b) 500 nm (c) 750 nm

A: In a wave of light, two parts are present which are known as crests and troughs. So, the distance…

Q: Part A What is the mass number of an ion with 106 electrons, 158 neutrons, and a +1 charge Express…

A: Given that, an element has a charge +1.The number of electrons in that element is 106.The number of…

Q: 123 mL of 0.120 M NANO3 Express your answer to three significant figures. > View Available Hint(s)…

A: Given 123ml of 0.120 M NaNO3 find the weight of solute

Q: What is the wavelength of light (in mm) for a photon with a frequency of 336.0 MHz? (Remember that 1…

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Q: The 5th Shell of an atom has a maximum capacity to contain 32 electrons. Select one: True False

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Q: Which of the following metals would be expected to have the smallest atomic radius? A) Cesium (Cs)…

A: In periodic table, on moving left-right the element's electronegativity as well as atomic number…

Q: For a beam of a light with a wavelength of 529 nm calculate the energy in kJ for 6 × 1023 of…

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Q: A beam of light contains 4.37 kJ energy and is made of 8.15x1023 photons. What is the wavelength of…

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Q: W+5 how many electrons

A: The symbol of Tungsten is "W" Atomic Number of Tungsten (W) =74

Q: 4. He Ne Ar 10 First lonization Energies of Elements 20 Kr Wins Na (nsporbyr bnshochso nen K Rb Cs…

A: The energy required for the removal of one electron from outermost shell is known as first…

Q: c=λν   NA= 6.022 x1023 E=hν  1 nm = 1 x 10-9 m     E= hc/λ  1THz = 1 x1012 Hz     c=2.998 x108 m/s I…

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Q: This dot structure represents  - S^2-  - [Ne] 3s^2 3p^6  Explain why your answer is correct

A: The answer is as follows:

Q: How many possible values are there for I when n = 4 Zero One Two O Three O Four

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Q: SI c = 3.0 x 108 m/s; h = 6.626 x 10 -34 J s; NA = 6.022 x 1023 moles 1 c = À v _AE =hv q=spht x m x…

A: MnO4- (aq)+ H2C2O4(aq)------> Mn+2 (aq) + CO2(g) As per our guidelines we can only solve first…

Q: A sample of an unknown compound is vaporized at 200. °C. The gas produced has a volume of 1760. mL…

A: Given data : Temperature(T) = 200°C = 473 K Volume of gas(V) = 1760 mL = 1.76 L Pressure(P) = 1 atm…

Q: Place the following in increasing atomic size, with 1 being the smallest and 3 being the largest.

A: Atomic size is defined as the distance between the centre of an atom's nucleus and its outermost…

Q: What is the energy of one mole of photons with a 0.792 m wavelength? Include units and correct…

A: Energy of the photon of blue light (Ep) = hc/ λ

Q: In a hydrogen atom, an electron loses energy from n = 5 to n = 2, a process that leads to some kind…

A: The energy of radiation will be given by the energy difference of electron in n = 5 and n = 2 Since…

Q: Visible light falls into wavelength ranges of 400-700 nm, for which 1 m = 1 x 10° nm. The energy and…

A: The wavelength of the light in meters can be calculated as follows:

Q: How many electrons can be assigned the set of quantum numbers n = 4 and l = 2?           (A) 2…

A: The given set represent 4d orbital , and maximum 10 electrons can be assigned.

Q: -2. What is the atomic term symbol for Hydrogen atom and what is the atomic term symbol for the…

A: 2. We have to write the atomic  term symbol for hydrogen and Helium atom as follows in step 2:

Q: 18. (a) What did Ernest Rutherford observe during his experiments? (b) What did Niels Bohr observe…

A: The observation of Rutherford and Bhor experiments are as follows:

Q: QUESTION 17 Determine the energy change associated with the transition from "=3 to = 2 in the…

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Q: Which of the following pairs of elements would you expect to have the most similar atomic radii? O…

A: Atomic Radius - It is basically a measure of the size of an atom. It measures from the nucleus to…

Q: Identify the region of the electromagnetic spectrum where the wavelength measurement of 15 m can be…

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Q: X D LQ A Z H|V R 5 E You will use the known periodic trends to compare properties for elements…

A: The elements given are,

Q: Calculate the broadcast wavelength of the radio station 99.10 FM.

A: Ephoton = hv   h is the plank's constant  v is the frequency of light  v = speed of light/wavelength…

Q: What if it's in period 3?

A: A lewis diagram of an element X

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.