MCQ
Nucleons are equal to :
- ANumber of electrons in an atom
- BNumber of protons in the nucleus
- CNumber of neutrons in the nucelus
- ✓Number of protons and neutrons in the nucleus
✓
Answer
Correct option: D.
Number of protons and neutrons in the nucleus
d
Nucleons are equal to number of protons and neutrons in the nucleus.
Nucleons are equal to number of protons and neutrons in the nucleus.
eg: If the given atom or isotope is $He _2^4 He _{ Z }^{ A }$
$Z=2$ Number of protons
$A=4$ Number of nucleons
$A - Z =4-2=2$ Number of neutrons
Hence nucleons $=$ number of $[$ protons $+$ neutrons $]$
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
For the second period elements the correct increasing order of first ionisation enthalpy is
The entropy changed involved in the conversion of $ 1 $ mole of liquid water at $ 373 \,K $ to vapour at the same temperature will be $[\Delta {H_{{\rm{vap}}}} = 2.257\,kJ/gm]$
→Among the following complexes which can act as oxidising agent.
Mark the correct statement
What is the expected order of reactivity of the following compounds in electrophilic chlorination $(Cl_2 + FeCl_3)$?
(more reactive $>$ less reactive)
→(more reactive $>$ less reactive)
Iron may be rendered passive by treatment with a concentrated solution of
For a solution formed by mixing liquids $L$ and $M$, the vapour pressure of $L$ plotted against the mole fraction of $M$ in solution is shown in the following figure. Here $x_{L}$ and $x_M$ represent mole fractions of $L$ and $M$, respectively, in the solution. The correct statement(s) applicable to this system is(are)
→(image)
$[A]$ Attractive intermolecular interactions between $L-L$ in pure liquid $L$ and $M-M$ in pure liquid $M$ are stronger than those between $L-M$ when mixed in solution
$[B]$ The point $Z$ represents vapour pressure of pure liquid $M$ and Raoult's law is obeyed when $x_{L} \rightarrow 0$
$[C]$ The point $Z$ represents vapour pressure of pure liquid $L$ and Raoult's law is obeyed when $x_{\mathrm{L}} \rightarrow 1$
$[D]$ The point $Z$ represents vapour pressure of pure liquid $M$ and Raoult's law is obeyed from $x_{L}=0$ to $x_{L}=1$
Vapour density of a gas is $22$. What is its molecular mass
→The cell reaction $Mn + 2Ag_{\left( {{C_1}} \right)}^ + \left( {aq} \right) \to Mn_{\left( {{C_2}} \right)}^{ + 2}\left( {aq} \right) + 2Ag$ is represented by
→Product $(A)$ of the reaction is
→