Answer:
Option B
Explanation:
As Brønsted-Lowry theory states, acids are the ones that can donate protons.
When a proton is donated, it is released to become medium more acidic.
HCl is a strong acid.
HCl (l) + H₂O (l) → H₃O⁺ (aq) + Cl⁻(aq)
These always reffers to strong acid where the dissociation is 100% completed.
In a weak acid, dissociation is not 100% complete, that's why we have an equilibrium.
HA (l) + H₂O (l) ⇄ H₃O⁺ (aq) + A⁻(aq) Ka
Answer: 4
Explanation:
Principle Quantum Numbers: This quantum number describes the size of the orbital. It is represented by n.
Azimuthal Quantum Number: This quantum number describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...
Magnetic Quantum Number: This quantum number describes the orientation of the orbitals. It is represented as
. The value of this quantum number ranges from
. When l = 2, the value of
will be -2, -1, 0, +1, +2.
Given : a f subshell, thus l = 3 , Thus the subshells present would be 3, 2, 1, 0 and thus n will have a value of 4.
Also electrons give are 32.
The formula for number of electrons is
.


Thus principal quantum no will be n= 4.
All Elements are obtained in the periodic table & water is Not an element it is a compound.
Answer :
(1) The frequency of photon is, 
(2) The energy of a single photon of this radiation is 
(3) The energy of an Avogadro's number of photons of this radiation is, 11.97 J/mol
Explanation : Given,
Wavelength of photon =
(1 m = 100 cm)
(1) Now we have to calculate the frequency of photon.
Formula used :

where,
= frequency of photon
= wavelength of photon
c = speed of light = 
Now put all the given values in the above formula, we get:


The frequency of photon is, 
(2) Now we have to calculate the energy of photon.
Formula used :

where,
= frequency of photon
h = Planck's constant = 
Now put all the given values in the above formula, we get:


The energy of a single photon of this radiation is 
(3) Now we have to calculate the energy in J/mol.



The energy of an Avogadro's number of photons of this radiation is, 11.97 J/mol