For valence shell of Na screening by - Vidyadip

MCQ

For valence shell of $Na$ screening by

A
$1s$ orbital
B
$2s$ orbital
C
$2p$ orbital
✓
All

✓

Answer

Correct option: D.

All

d
Because for valence shell screening by all inner electrons.

$\therefore \,1{s^2}\,2{s^2}\,2{p^6}\,3{s^2}$

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

More "M.C.Q (1 Marks)" from 3. Classification of elements and periodicity in properties→3. Classification of elements and periodicity in properties — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Which of the following sequence of reactions (reagents) can be used for the conversion of $C_6H_5CH_2CH_3$ into $C_6H_5CH = CH_2$ ?

The $C-H$ bond distance is longest in

Which of the following alkene is most stable

A filled or half-filled set of $p$ or $d$-orbitals is spherically symmetric. Point out the species which has spherical symmetry

Which of the following statements is not true about enantiomers

Note: Consider the following four compounds for answering questions:

$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{O}\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ||\\\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{C}-\text{H}$
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{O}\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ||\\\text{CH}_3-\text{CH}_2-\text{CH}_2\text{CH}_2-\text{C}-\text{CH}_3$
$\text{CH}_3-\text{CH}_2-\text{C}-\text{CH}_2-\text{CH}_3\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ||\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{O}$
$\text{CH}_3-\text{CH}-\text{CH}_2-\text{C}-\text{H}\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\ \ \ \ \ \ \ \ \ \ \ ||\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3\ \ \ \ \ \text{O}$

Which of the following pairs are position isomers?

Assign $A, B, C, D$ from given type of reaction. $C\left( s \right) + {O_2}\left( g \right)\xrightarrow{\Delta }C{O_2} \uparrow $

For the reaction $CO(g) + 2{H_2}(g)$ $\rightleftharpoons$ $C{H_3}OH(g)$, true condition is

Decreasing order of stability of

$(a)$ $C{H_3} - \mathop C\limits^ \oplus H - C{H_3}$

$(b)$ $C{H_3} - \mathop C\limits^ \oplus H - OC{H_3}$

$(c)$ $C{H_3} - \mathop C\limits^ \oplus H - CO - C{H_3}$

${H_2} + \frac{1}{2}{O_2} \to {H_2}O;\,\Delta H = - 68.39\,kcal$

$K + {H_2}O + $Water $ \to KOH(aq) + \frac{1}{2}{H_2};\,\Delta H = - 48\,kcal$

$KOH + $Water $ \to KOH(aq);\,\Delta H = - 14\,kcal$

The heat of formation of $KOH$ is (in kcal)