The frequency of the ray with a wavelength of 3.10 × 10¹⁴ is 9.671 × 10⁻⁷.I attached the working and the answer to the question below. I hope I was able to help.
Please note that C = speed of light, ν = frequency and λ= wavelength.
Add the reltive atomic mass of Ca and O which are 40 and 16 respectively after addition we get molecular mass of CaO which is 40+16=56 now divide atomic mass of O by molecular mass of CaO and multiply it with 100 as show n 16/56 *100=28.57%
Elements are now organized by increasing atomic mass. Hence, option B is correct.
<h3>What is a periodic table?</h3>
The periodic table is a tabular array of chemical elements organized by atomic number.
Mendeleev's periodic table orders the elements based on their atomic mass whereas the Modern periodic table orders the elements based on their atomic number.
Hence, option B is correct.
Learn more about the periodic table here:
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Explanation:
Formula for energy value is as follows.
E =
where, = 13.6
n = number of shell
So, at ground state energy of hydrogen atom will be as follows.
E =
=
= -13.6
Hence, for an ionized atom value of energy will be as follows.
E' =
or, E' =
Thus, we can conclude that total energy of the remaining electron in the ionized atom is .
I believe the correct answer from the choices listed above is option D. It is CH2O that <span>is a nonelectrolyte in aqueous solution since it does not dissociates into ions when dissolved in water. Hope this answers the question. Have a nice day.</span>