MCQ
Which one of the following represents the electronic configuration of the most electropositive element
- A$[He]\,2{s^1}$
- ✓$[Xe]\,6{s^1}$
- C$[He]\,2{s^2}$
- D$[Xe]\,6{s^2}$
✓
Answer
Correct option: B.
$[Xe]\,6{s^1}$
b
(b) Electropositive nature increases down the group and decreases across the period.
(b) Electropositive nature increases down the group and decreases across the period.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Choose the correct explanation regarding half $-$ reaction such as $\text{Cr}_2\text{O}^{2-}_7\xrightarrow{\ \ \ \ \ \ \ \ }\text{Cr}^{3+}$ from the following.
→Choose the statement that besi: describes given compounds
For the given reaction :
$H_2(g) + S(s) \to H_2S(g)$ ; $\Delta {H_r} = 100\, kJ/mol$ and $\Delta {S_r} = 400\, J/mol/K$ Temperature at which above reaction occurs reversibly is (Assumning $\Delta {H_r}$ and $\Delta {S_r}$ are independent of temperature).....$K$
→$H_2(g) + S(s) \to H_2S(g)$ ; $\Delta {H_r} = 100\, kJ/mol$ and $\Delta {S_r} = 400\, J/mol/K$ Temperature at which above reaction occurs reversibly is (Assumning $\Delta {H_r}$ and $\Delta {S_r}$ are independent of temperature).....$K$
Which of the following element has the lowest ionization potential
Only one element of forms hydride.
Solid fuel used in rocket is a mixture of $Fe _2 O _3$ and $Al$ (in ratio $1: 2$ ). The heat evolved $( kJ )$ per gram of the mixture is $............$. (Neatest integer)
→Given : $\Delta H _{ f }^{\ominus}\left( Al _2 O _3\right)=-1700\,kJ\,mol ^{-1}$
$\Delta H _{ f }^\theta\left( Fe _2 O _3\right)=-840\,kJ\,mol ^{-1}$
Molar mass of $Fe , Al$ and $O$ are $56,27$ and $16\,g\,mol ^{-1}$ respectively.
The number of gram molecules of a substance present in unit volume is termed as
For the reaction $2Al + 3MnO\xrightarrow{\Delta }A{l_2}{O_3} + Mn;$ If $108\,g$ of $Al$ and $213\,g$ of $MnO$ are heated then which of the following is incorrect?
→Which of the following method is used to purify liquids having very high boiling points and those which decompose at or below their boiling points?
Structure of the compound whose $IUPAC$ name is ${3-}$Ethyl$-{2-}$hydroxy${-4}-$methylhex$-{3-}$en$- 5-$ynoic acid is
→