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Answer:
1.17 moles
Explanation:
Since the gas is at the same temperature and pressure, the number of moles should change in direct proporation to the gas volume.
Moles Gas = (0.6 moles)*(30L/15.4L) = 1.17 moles
Answer:Statement 1 and 3 are true
Explanation:
Ca+(g) + e- ➡Ca(g)
Electron affinity of an atom or molecule is defined as the change in energy (in kJ/mole) of a neutral molecule(in gaseous state)when an electron is added to an atom to form a negative ion.Energy is released in the process thus the first electron affinities are negative.
On the other hand ionisation energy is the quantity of an energy a gaseous atom in its ground must absorb to discharge an electron.
H(g)➡H+(g) + e-
Considering both these definitions,statement 1 and 3 both falls true.
As the effective nuclear charge of an atom increases the atomic radii decreases and the ionization energy increases.
Effective nuclear charge is the net positive charge experienced by an single electron in an multi electron atom. The term “effective” is used because of the shielding effect of negatively charged electrons that prevents higher orbital electrons from experiencing the full nuclear charge.
So keeping this concept in mind we can say that as the effective nuclear charge on any atom increases the atomic radii or the size of the atom decreases. This is because as the the effective nuclear charge increases the electrons that are present in the orbit are pulled closer to the nucleus, so if the effective nuclear charge is more then the electrons are pulled more towards the nucleus and therefore the size or rhe atomic radii decreases
Now if we talk about the ionization energies, ionization energy is the energy required to remove the outer most electron from the orbit to form the ion. So if the effective nuclear charge is more for an atom then obviously the size of the atom would be less and because of this it will be difficult to remove the outermost electron as it is strongly attracted towards the nucleus. Hence the ionization energy will be more.
To know more about effective nuclear charge
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