What role(s) dose the size as a physical property of the lanthanides and actinides plays to the effect of their complexation and magnetic property?

2 years ago

Share

Answers : (2)

                                        

The lanthanides and actinides are set apart even further from the transition metals. In most versions of the periodic table, lanthanum (57) is followed by hafnium (72) in the transition metals section of the chart. Similarly, actinium (89) is followed byrutherfordium(104). The "missing" metals—lanthanides and actinides respectively—are listed at the bottom of the chart. There are reasons for this, as well as for the names of these groups.

After the 6sorbital fills with the representative elemen barium(56), lanthanum does what a transition metal does—it begins filling the 5dorbital. But after lanthanum, something strange happens:cerium(58) quits filling 5d,and moves to fill the 4forbital. The filling of that orbital continues throughout the entirelanthenide series, all the way tolutetium(71). Thus lanthanides can be defined as those metals that fill the 4forbital; however, because lanthanum exhibits similar properties, it is usually included with the lanthanides.

A similar pattern occurs for the actinides. The 7sorbital fills withradium(88), after which actinium (89) begins filling the 6dorbital. Next comesthorium, first of the actinides, which begins the filling of the 5forbital. This is completed with element 103,lawrencium. Actinides can thus be defined as those metals that fill the 5forbital; but again, because actinium exhibits similar properties, it is usually included with the actinides

Thank You
Ruchi
Askiitians faculty
5 months ago
                                        

he lanthanides and actinides are set apart even further from the transition metals. In most versions of the periodic table, lanthanum (57) is followed by hafnium (72) in the transition metals section of the chart. Similarly, actinium (89) is followed byrutherfordium(104). The "missing" metals—lanthanides and actinides respectively—are listed at the bottom of the chart. There are reasons for this, as well as for the names of these groups.

After the 6sorbital fills with the representative elemen barium(56), lanthanum does what a transition metal does—it begins filling the 5dorbital. But after lanthanum, something strange happens:cerium(58) quits filling 5d,and moves to fill the 4forbital. The filling of that orbital continues throughout the entirelanthenide series, all the way tolutetium(71). Thus lanthanides can be defined as those metals that fill the 4forbital; however, because lanthanum exhibits similar properties, it is usually included with the lanthanides.

A similar pattern occurs for the actinides. The 7sorbital fills withradium(88), after which actinium (89) begins filling the 6dorbital. Next comesthorium, first of the actinides, which begins the filling of the 5forbital. This is completed with element 103,lawrencium.Actinides can thus be defined as those metals that fill the 5forbital; but again, because actinium exhibits similar properties, it is usually included with the actinides

Thank You
Ruchi
Askiitians faculty
5 months ago

Post Your Answer

More Questions On Inorganic Chemistry

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
pls provide me information on diff types of backbonding eg. ppi-ppi,ppi-dpi,dpi,ppi,,,,,etc
 
 
Pπ- Pπ bonding is called back bonding In BF3molecule the 2P orbitals of each F atom are fully filled, while one of 2Porbital of the B atom is vacant. The two 2P orbitals involved in...
  img
Sunil Kumar FP 12 days ago
why is [FeCl4]2- is colourless ?
 
 
The colour exhibited by the transition metal ions is due to their ability to absorb light in the visible region of the electromagnetic spectrum. This causes unpaired d electrons to rise from...
  img
Sunil Kumar FP 27 days ago
how to prepare for organic tests effectively!!?? pls suggest a method
 
 
Organic compounds unlike the inorganic ones cannot be identifeid by testing the ions as they do not give ions in the solution because of having colvalent linkages in them.Organic compounds...
  img
Aarti Gupta 22 days ago
how many farads are required for reduction of one mole C 6 H 5 NO 2 into C 6 H 5 NH 2
 
 
C6H5NO2 + 6H (in the presence of Sn and HCl)——————→ C6H5NH2 + 2H2O for conversion of 1 mole of nitrpbenzene 6 mole of electron are required charge on...
  img
Sunil Kumar FP one month ago
what is the covalency of N in HNO3 and N2O5 ?????
 
 
+5 for N2O5
 
Amit Nagavi yesterday
View all Questions »