Which of the following is not correctly matched? - Vidyadip

MCQ

Which of the following is not correctly matched?

A
$Z = 48;$ group no. $12^{th},$ period no. $= 5^{th}$
✓
$[Xe]\,4f^7\,5d^1\,6s^2;$ group no $= 8^{th},$ period no. $= 6^{th}$
C
$[Rn]\,6d^3\,5f^{14}\,7s^2;$ group no. $5^{th},$ period no. $= 7^{th}$
D
$Z = 56;$ group no. $2^{nd},$ period no. $= 6^{th}$

✓

Answer

Correct option: B.

$[Xe]\,4f^7\,5d^1\,6s^2;$ group no $= 8^{th},$ period no. $= 6^{th}$

b

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

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Which of the following properties show gradual decrease with increase in atomic number across a period in the periodic table

The maximum work done in expnading $16\,g\, O_2$ isothermally at $300\, K$ and occupying a volume $5\, dm^3$ until the volume becomes $25\, dm^3$ is

The equilibrium constant in a reversible reaction at a given temperature

If $O _{2}$ gas is bubbled through water at $303 \;K$, the number of millimoles of $O _{2}$ gas that dissolve in 1 litre of water is (Nearest Integer) (Given : Henry's Law constant for $O _{2}$ at $303 \;K$ is $46.82 \;k$ bar and partial pressure of $O _{2}=0.920 \;bar$ ) (Assume solubility of $O _{2}$ in water is too small, nearly negligible)

For $3d_{z^2}$ calculate the value of $n, \ell , m$ and $s$

The maximum freezing point falls in

The formula of oxide of an element $M$ having $IE_1 = 100\, kJ$, $IE_2 = 250\, kJ$ and $IE_3 = 1500\, kJ$ should be

In the reaction, $A + B \to C + D$ , the rate $\left( {\frac{{dx}}{{dt}}} \right)$ when plotted against time $'t'$ gives a straight line parallel to time axis. The order and rate of reaction will be

Number of sigma bonds in ${P_4}{O_{10}}$ is