The electronic configurations of four element | vedclass

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(B) Let us identify the elements based on their electronic configurations $:-$$(I) \ [Xe] 6s^1$ is Cesium $(Cs)$,an alkali metal. Alkali metals are st

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$(II)$ is a $d-$block element

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(B) Let us identify the elements based on their electronic configurations $:-$$(I) \ [Xe] 6s^1$ is Cesium $(Cs)$,an alkali metal. Alkali metals are strong reducing agents.$(II) \ [Xe] 4f^{14} 5d^1 6s^2$ is Lutetium $(Lu)$. Although it has a $5d^1$ electron,it is classified as an $f-$block element (lanthanoid) because the $4f$ subshell is completely filled.$(III) \ [Ar] 4s^2 4p^5$ is Bromine $(Br)$,a halogen. Halogens have high electron affinity.$(IV) \ [Ar] 3d^7 4s^2$ is Cobalt $(Co)$,a transition metal. Transition metals exhibit variable oxidation states.Therefore,the statement that $(II)$ is a $d-$block element is incorrect,as it is an $f-$block element.

List-$I$	List-$II$
$(A)$ Ionization enthalpy	$(i)$ $P < Si < Mg < Na$
$(B)$ Metallic character	$(ii)$ $I < N < O < F$
$(C)$ Electron gain enthalpy	$(iii)$ $B < Be < C < O < N$
$(D)$ Electronegativity	$(iv)$ $I < Br < F < Cl$

The electronic configurations of four elements are $:-$
$(I) \ [Xe] 6s^1$
$(II) \ [Xe] 4f^{14} 5d^1 6s^2$
$(III) \ [Ar] 4s^2 4p^5$
$(IV) \ [Ar] 3d^7 4s^2$
Select the incorrect statement about these elements $:-$

Similar Questions

Which of the following statements regarding the block classification of elements with atomic numbers $(Z)$ is correct?

Match the following and select the correct option:
List-$I$ List-$II$
$(A)$ Ionization enthalpy $(i)$ $P < Si < Mg < Na$
$(B)$ Metallic character $(ii)$ $I < N < O < F$
$(C)$ Electron gain enthalpy $(iii)$ $B < Be < C < O < N$
$(D)$ Electronegativity $(iv)$ $I < Br < F < Cl$

The number of the following pairs of elements which exhibit a diagonal relationship is:
$1. B \text{ and } Si$
$2. Be \text{ and } Al$
$3. Li \text{ and } Mg$
$4. Al \text{ and } S$

Two statements are given below.
Statement $I$: Nitrogen has more ionization enthalpy and electronegativity than beryllium.
Statement $II$: $CrO_3$ and $B_2O_3$ are acidic oxides.
Correct answer is

Which one of the following sets of ions represents the collection of isoelectronic species?

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The electronic configurations of four elements are $:-$$(I) \ [Xe] 6s^1$$(II) \ [Xe] 4f^{14} 5d^1 6s^2$$(III) \ [Ar] 4s^2 4p^5$$(IV) \ [Ar] 3d^7 4s^2$Select the incorrect statement about these elements $:-$