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Usually we come across anomalies in the trend's of periodic properties for example the size (Atomic Radius Value from Raymond 9th Edition) Of Gallium {135 pm} as opposed to the basic trend that atomic size increases down the group.
This is usually attributed to the fact that the poor shielding of nuclear charge by intervening D orbitals leads to greater hence the radius is less as opposed to the trend.
If that's the reason why don't we observe similar effects for other groups: Like group 15 having Phosphorus {110 pm} and Arsenic {120 pm}.
[Here the Size doesn't increase much but is still significant as compared to changes taking place in group 13] where the size actually increases even when there are D orbitals to intervene.
There another example of Indium{166 pm} and Titanium {171 pm} both belong to Group 13.
As compared to other these Two Members have the Lowest increase in Atomic Radius.
▶ Sorry the kind of Answer that came in my mind I Gave!!
This is usually attributed to the fact that the poor shielding of nuclear charge by intervening D orbitals leads to greater hence the radius is less as opposed to the trend.
If that's the reason why don't we observe similar effects for other groups: Like group 15 having Phosphorus {110 pm} and Arsenic {120 pm}.
[Here the Size doesn't increase much but is still significant as compared to changes taking place in group 13] where the size actually increases even when there are D orbitals to intervene.
There another example of Indium{166 pm} and Titanium {171 pm} both belong to Group 13.
As compared to other these Two Members have the Lowest increase in Atomic Radius.
▶ Sorry the kind of Answer that came in my mind I Gave!!
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