MCQ
In a given shell, the order of screening effect is
  • $s > p > d > f$
  • B
    $f > d > p > s$
  • C
    $p < d < s < f$
  • D
    $d > f < s > p$

Answer

Correct option: A.
$s > p > d > f$
a
(a) The order of screening effect in a given shell are in order $s > p > d > f$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The decomposition of $N_2O_5$ is a first order reaction represented by $N_2O_5 \to N_2O_4 + \frac{1}{2} O_2.$ After $15\, minutes$ the volume of $O_2$ produced is $9\,ml$ and at the end of the reaction $35\,ml$. The rate cosntant is equal to
m-chlorobenzaldehyde on reaction with conc. $KOH$ at room temperature gives
Assign $A, B, C, D$ from given type of reaction. $N{H_4}Cl + NaN{O_2}\xrightarrow{\Delta }{N_2} \uparrow  + NaCl + {H_2}O$
The flucculation value of $\mathrm{HCl}$ for arsenic sulphide sol. is $30\; \mathrm{m}\; mole \;\mathrm{L}^{-1} .$ If $\mathrm{H}_{2} \mathrm{SO}_{4}$ is used for the flocculation of arsenic sulphide, the amount, in grams, of $\mathrm{H}_{2} \mathrm{SO}_{4}$ in $250\; \mathrm{ml}$ required for the above purpose is (molecular mass of $\left.\mathrm{H}_{2} \mathrm{SO}_{4}=98 \;\mathrm{g} / \mathrm{mol}\right)$
A coordination complex of type $MX_2Y_2$ ($M-$ metal ion; $X , Y-$ monodentate ligands), can have either a tetrahedral or a square planar geometry.  The maximum number of possible isomers in these two cases are respectively 
Which one has maximum oxidation number of phosphorous
$C_6H_6 + A \xrightarrow{{AlC{l_3}}} C_6H_5CONH_2$

$A$ in the above reaction is:

product $(A)$ is
Assertion : Alkyl isocyanides in acidified water give alkyl formamides.
Reason : In isocyanides, carbon first acts as a nucleophile and then as an electrophile
$C{l_2} + \mathop {NaOH}\limits_{\left( {dil\,and\,coid} \right)} \longrightarrow A + B + {H_2}O$ . The anions of $A$ and $B$ are respectively _____