Explain the Properties of Ionic and covalent substances.
2 answers:
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Answer:
Wavelength of light in (nm) = 579 nm
Explanation:
At first you find out the amount of energy needed to just eject one electron. This is given by
this energy is given in question in kj/mole. This is the work function of cesium for each electron is equal to the planc'k einstein equation.
Explanation:
General electronic configuration for the given groups are as follows.
For 4A(14) :
This means that there are 4 unpaired electrons in group 4A(14).
For 7A(17) :
So, there are 7 unpaired electrons present in group 7A(17).
For 1A(1) :
Hence, there is only one unpaired electron present in group 1A(1).
For 6A(16) :
So, there are 6 unpaired electrons present in group 6A(16).