Which out of Ca and Zn atoms has higher ionization energy and why?
Answers
Answered by
26
Zn has higher ionization energy
_______________________________________________________________
it is because Ca is in 2nd group and n the 2 nd group the attraction between electron and nucleus is low.
______________________________________________________________
so in 2nd group elements can easily loss electrons and ionization enthalpy is low in 2nd group
_____________________________________________________________
but it is found higher in Zn so Zn has higher ionization energy
_______________________________________________________________
it is because Ca is in 2nd group and n the 2 nd group the attraction between electron and nucleus is low.
______________________________________________________________
so in 2nd group elements can easily loss electrons and ionization enthalpy is low in 2nd group
_____________________________________________________________
but it is found higher in Zn so Zn has higher ionization energy
Answered by
48
Calcium and Zinc both are in the fourth period. Ca is in group 2. Zn is to the right of Ca in the periodic table.
Zn: Z = 30 has 3s² 3p⁶ 3d¹° 4s²
Ca: Z = 20 has 3s² 3p⁶ 4s²
In a period, as Z increases, the higher charge in nucleus pulls the atom closer, so the radius of Zn is smaller than that of Ca.
So the 4s² electrons are closer to the nucleus in Zn than in Ca. Hence the ionization energy is more for Zinc, as the electrons are attracted more to protons.
Zn: Z = 30 has 3s² 3p⁶ 3d¹° 4s²
Ca: Z = 20 has 3s² 3p⁶ 4s²
In a period, as Z increases, the higher charge in nucleus pulls the atom closer, so the radius of Zn is smaller than that of Ca.
So the 4s² electrons are closer to the nucleus in Zn than in Ca. Hence the ionization energy is more for Zinc, as the electrons are attracted more to protons.
kvnmurty:
click on red hearts thanks button pls
Similar questions