MCQ
In argon atom how many electrons have $m_{\ell } = 1$ ?
  • $4$
  • B
    $2$
  • C
    $1$
  • D
    $6$

Answer

Correct option: A.
$4$
a
Argon has $18$ electrons

$A r(18)=1 s^2 \,2 s^2 \,2 p^6 \,3 s^2\, 3 p^6$

Value of $m_l \in(-l, l)$

where $l$ is aximuthat quantum number.

Total number of electrons for $m_l=1$ are $4$

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 position of equilibrium lies to the right in each of these reactions :

$N_2H_5 ^+ + NH_3$ $\rightleftharpoons $ $NH_4^+ + N_2H_4$

$NH_3 + HBr $ $\rightleftharpoons $ $NH_4^+ + Br^-$

$N_2H_4 + HBr$ $\rightleftharpoons $ $N_2H_5^+ + Br^-$

Based on this information, what is the order of acidic strength -

Which of the following hormones help in the conversion of Glucose into glycogen in the body?
The IUPAC name for the complex $\left[ Co \left( NH _3\right)_5\left( NO _2\right)\right] Cl _2$ is:
A tetrapeptide has $- COOH$ group on alanine. This produces glycine $(Gly)$, valine $(Val)$, phenyl alanine $(Phe)$ and alanine $(Ala)$, on complete hydrolysis. For this tetrapeptide, the number of possible sequences (primary structures) with $- NH _2$ group attached to a chiral center is:
$C{H_3}COOH\xrightarrow[\Delta ]{{N{H_3}}}X\xrightarrow{{NaOBr}}Y\xrightarrow{{NaN{O_2} + HCl}}Z$ 

What is $Z$ ?

$\,$
Which one is the correct order of acidity ?
Among the elements $Ca, Mg, P$ and $Cl,$ the order of increasing atomic radii is
An acidified solution of potassium chromate was layered with an equal volume of amyl alcohol. When it was shaken after the addition of $1 mL$ of $3 \% H _2 O _2$, a blue alcohol layer was obtained. The blue color is due to the formation of a chromium ($VI$) compound ' $X$ '. What is the number of oxygen atoms bonded to chromium through only single bonds in a molecule of $X$ ?
$LIST-I$ contains reactions and $LIST-II$ contains major products. Match each reaction in $LIST-I$ with one or more products in $LIST-II$ and choose the correct option.