MCQ
The atomic number of an element is always equal to
  • A
    Atomic weight divided by $2$
  • B
    Number of neutrons in the nucleus
  • C
    Weight of the nucleus
  • Electrical charge of the nucleus

Answer

Correct option: D.
Electrical charge of the nucleus
d
Atomic number $=$ number of protons.

Each proton has unit positive charge and hence, electrical charge of the nucleus is equal to the atomic number of the element.

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

Number of chiral centre in the given compound is
Which of the following species is an acid and also a conjugate base of another acid
If $K_{sp}$ of $CaF_2$ at $25\,^oC$ is $1.7 \times 10^{-10}$, the combination amongst the following which gives a precipitate of $CaF_2$ is
How many $1^o $ carbon atom will be present in a simplest hydrocarbon having two $3^o $ and one $2^o $ carbon atom ?
In the following questions two or more options may be correct : Which of the following have identical bond order?
For the reaction in equilibrium

$2NOB{r_{(g)\,}}\, \rightleftharpoons \,2N{O_{(g)}}\, + \,B{r_{2(g)}}$

if ${P_{B{r_2}}}$ is $\frac {P}{4}$ At equilibrium and $P$ is total pressure then calculate $\frac {P}{K_P}.$

For emission line of atomic hydrogen from $n_1= 8$ to $n_f = n$, the plot of wave number $\left( {\bar v} \right)$ against $\left( {\frac{1}{{{n^2}}}} \right)$ will be(The Rydberg constant, $R_H$ is in wave number unit)
Which of the following glass is used in making wind screen of automobiles
Solid $KClO_3$ is taken in a container maintained at constant pressure of $1\,atm$. Upon heating following equilibrium is obtained

$2KCl{O_4}(s) \rightleftharpoons 2KCl(s) + 3{O_2}(g)$

If $\Delta {H^o} = 25\,kcal/mol$ and $\Delta {S^o} = 50\,cal/K$, at what temperature equilibrium will be established in the container. (Ignore variation of $\Delta {H^o}$ and $\Delta {S^o}$ with temperature.)......$K$

A compound $X$ formed a fter heating coke with lime react with water to give $Y$  which on passing over red hot iron at $873$ produces $Z$. The compound $Z$