Plz answer these question
Dear student,
The answers for your query(a,b,c) are below:-
(a)The atomic radii of elements increase with an increase in atomic number from top to bottom in a group. As we move down the group, the principal quantum number increases. A new energy shell is added at each succeeding element. The valence electrons lie farther and farther away from the nucleus. As a result, the attraction of the nucleus for the electron decreases. Hence, the atomic radius increases
so Element D is the biggest atom in Group I.
(b)The energy required to remove an electron from an atom is known as ionization enthalpy (Ionization energy).
As atomic size increases,ionization enthalpy decreases.As atomic size increases from top to bottom in a group so ionization enthalpy decreases.so,Element D has lowest ionization enthalpy.
(c)As we move from left to right in a period, nuclear charge increases by 1 unit in each succeeding element while the number of shells remains the same. This enhanced nuclear charge pulls the electrons of all the shells closer to the nucleus.
This makes each individual shells smaller and smaller.
This result in a decrease of the atomic radius as we move from left to right in a period
The Element M belonging to Group 17 is the smallest.
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The answers for your query(a,b,c) are below:-
(a)The atomic radii of elements increase with an increase in atomic number from top to bottom in a group. As we move down the group, the principal quantum number increases. A new energy shell is added at each succeeding element. The valence electrons lie farther and farther away from the nucleus. As a result, the attraction of the nucleus for the electron decreases. Hence, the atomic radius increases
so Element D is the biggest atom in Group I.
(b)The energy required to remove an electron from an atom is known as ionization enthalpy (Ionization energy).
As atomic size increases,ionization enthalpy decreases.As atomic size increases from top to bottom in a group so ionization enthalpy decreases.so,Element D has lowest ionization enthalpy.
(c)As we move from left to right in a period, nuclear charge increases by 1 unit in each succeeding element while the number of shells remains the same. This enhanced nuclear charge pulls the electrons of all the shells closer to the nucleus.
This makes each individual shells smaller and smaller.
This result in a decrease of the atomic radius as we move from left to right in a period
The Element M belonging to Group 17 is the smallest.
"For more queries just ask in a separate thread here on the forum and our experts will try to help you out as soon as possible"
Regards