I need help on either question you can answer. Thank

Ответ:

solizpaco7124

13.02.2022

Further explanation

1.Atomic Number (Z) = Mass Number (A) - Number of Neutrons

neutrons = mass number-atomic number

Atomic mass Cl-37= 17

Mass number Cl-37=37

Neutrons = 37-17=20

2. Mass atom X = mass isotope 1 . % + mass isotope 2.%...

$\tt atomic~mass~X=0.0224\times 88+0.7832\times 90+0.1944\times 91=90.1$

3. The energy in one photon can be formulated as

$\large{\boxed{\bold{E\:=\:h\:.\:f}}}$

f = c / λ, so :

$\tt E\approx f\approx \dfrac{1}{\lambda}$

Energy is directly proportional to frequency and inversely proportional to the wavelength

So, as the frequency of photon increases, the energy of photon increases

4. Based on answer number 3 :

A. The wavelength becomes longer, and the energy decreases

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