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?

3 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
11 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
11 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
suppose you have a sample of sulphur containing 1x10 23 sulphur atoms.if a cyclic molecule of sulphur contains S 8 structure then how many molecules of S 8 do you have?
 
 
The sample of sulphur contains sulphur in the cyclic molecule form. 1 molecule contains 8 atoms of sulphur so 10 23 atoms will make (10 23 /8) molecules.
 
DHRUVESH KHANDELWAL 5 months ago
is lanthanoids can form nitrides ?
 
 
yes lanthanoid form nitrides. All of the lanthanides form a mononitride, LnN, with the rock salt structure. The mononitrides have attracted interest because of their unusual physical...
  img
Sunil Kumar FP 5 months ago
in the presence of moisture,SO 2 can
 
 
lose elactrons
 
eshwar 2 months ago
aniline can be converted into benzene by??
 
 
Aniline can be converted into benzene as follows- 1.Treat aniline with nitrous acid which changes NH2 group to N2+Cl to form diazonium salt C6H5NH2 + HNO2 ------------> C6H5N2+Cl 2.Now...
  img
Aarti Gupta 4 months ago
why liquid boils when its vapour pressure equals external pressure.
 
 
A liquid boils at a temperature at which its vapor pressure is equal to the pressure of the gas above it. The lower the pressure of a gas above a liquid, the lower the temperature at which...
  img
Harishwar 3 months ago
 
At the boiling temperature the vapor inside a bubble has enough pressure to keep the bubble from collapsing. inside bubble the pressure vapour equals its vapour pressure. to prevent it from...
 
rohan 3 months ago
What will be the IUPAC name of this compound??
 
 
IUPAC name : N,N- isobutylmethylamine ….….….….….….….….….….….….….….…......
  img
Ramreddy 2 months ago
View all Questions »