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Answer 1

Answer:

1)(i)The atomic radii of the d - block elements is decreasing slowly from left to right.

(ii)while we move slowly from left to right the electron which was filled at last will enter the penultimate d subshell.

(iii)the one more thing which happens when we move slowly from left to right is the nuclear charge increase by 1.

(iv)so,the result is the atomic number and nuclear charge increases.

(v)therefore,the atomic radii slowly decrease as we move left to right on the transition series.

2)➣whenever,two electrons are paired together or the result of the spin is 0 . they are called as diamagnetic electrons.

➣whenever,the atom has a net spin of one orbital . it is called as paramagnetic electrons.

\red{ \sf➠{Zn}^{2 + } = diamagnectic.}➠Zn

2+

=diamagnectic.

\pink{ \sf➠{Ti}^{3 + } = paramagnetic.}➠Ti

3+

=paramagnetic.

\purple{ \sf➠ {Co}^{2 + }= paramagnetic.}➠Co

2+

=paramagnetic.

additional information:

➠Atoms with all diamagnetic electrons are called diamagnetic atoms.

➠an atom have 10 diamagnetic electrons.

➠No+ is paramagnetic.

➠examples of paramagnetic - aluminium and oxygen.

Answer 2

$\dagger\mathbb\red{QUESTIONS : }$1.Explain the trends in atomic radii of d - block elements.

$\sf 2.what \: is \: meant \: by \: diamagnetic \: and \\ \sf paramagnetic \: are \:? {Zn}^{2 + } ,{Ti}^{3 + } ,{Co}^{2 + } ?$

$\dagger\mathbb\purple{SOLUTIONS : }$

1)(i)The atomic radii of the d - block elements is decreasing slowly from left to right.

(ii)while we move slowly from left to right the electron which was filled at last will enter the penultimate d subshell.

(iii)the one more thing which happens when we move slowly from left to right is the nuclear charge increase by 1.

(iv)so,the result is the atomic number and nuclear charge increases.

(v)therefore,the atomic radii slowly decrease as we move left to right on the transition series.

2)➣whenever,two electrons are paired together or the result of the spin is 0 . they are called as diamagnetic electrons.

➣whenever,the atom has a net spin of one orbital . it is called as paramagnetic electrons.

$\red{ \sf➠{Zn}^{2 + } = diamagnectic.}$

$\pink{ \sf➠{Ti}^{3 + } = paramagnetic.}$

$\purple{ \sf➠ {Co}^{2 + }= paramagnetic.}$

additional information:

➠Atoms with all diamagnetic electrons are called diamagnetic atoms.

➠an atom have 10 diamagnetic electrons.

➠No+ is paramagnetic.

➠examples of paramagnetic - aluminium and oxygen.