MCQ
The atomic number of an element is determined by:
- AThe number of electrons in one atom.
- BThe number of neutrons in one atom.
- CThe valency of the element.
- DThe number of protons in one atom.
✓
Answer
- The number of protons in one atom.
Explanation:
Atomic number is the number of protons in the nucleus of an atom and also the total positive charge in the atomic nucleus.
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
Configuration of given compound is
Mutarotation involves -
The work done to contract a gas in a cylinder, is $ 462\, joules$. $128 \,joule$ energy is evolved in the process. What will be the internal energy change in the process.....$joules$
→Which of the following would have a permanent dipole moment
A solution has $pH = 5$, it is diluted $100 $ times, then it will become
→Ionisation energy of $He^+$ is $19.6\times 10^{-18} \,J\,atom^{-1}.$ The energy of the first stationary state $(n = 1)$ of $ Li^{+2}$ is
→Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them
What is the value of electron gain enthalpy of $Na^+$ if $IE_1$ of $Na \ 5.1\ eV$ ? .......... $\mathrm{eV}$
→$1, 3-$ butadiene has
→The compound $\begin{matrix}
C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}} \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}$ on reaction with $NaIO_4$ in the presence of $KMnO_4$ gives :-
→C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}} \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}$ on reaction with $NaIO_4$ in the presence of $KMnO_4$ gives :-