How is an atom represented ? Why?
How is an atom represented ? Why?
The positive charge in the nucleus is that of the protons.
A proton carries one unit of fundamental charge and is stable.
All the electrons of an atoms are outside the nucleus and revolving around it in a circular orbit because of the coulomb force.
The number of electrons in the atom is called the atomic number $Z$. Hence the total charge of electrons of atom is $(-Ze)$.
Since the atom is neutral, the charge of the nucleus is $(+ Ze)$ Hence, the number of protons in the nucleus of the atom is the atomic number $Z$.
Similar Questions
How the radius of the nucleus is estimated ? Write its relation to radius and atomic mass number.
How the radius of the nucleus is estimated ? Write its relation to radius and atomic mass number.
A nucleus has mass number $A_1$ and volume $V_1$.
Another nucleus has mass number $A_2$ and volume $V_2$. If relation between mass number is $A_2=4 A_1$, then $\frac{V_2}{V_1}=$_____.
A nucleus has mass number $A_1$ and volume $V_1$.
Another nucleus has mass number $A_2$ and volume $V_2$. If relation between mass number is $A_2=4 A_1$, then $\frac{V_2}{V_1}=$_____.
- [JEE MAIN 2024]
In the following reaction $_{12}M{g^{24}}{ + _2}H{e^4}{ \to _{14}}S{i^X}{ + _0}{n^1},X$ is
In the following reaction $_{12}M{g^{24}}{ + _2}H{e^4}{ \to _{14}}S{i^X}{ + _0}{n^1},X$ is
Size of nucleus is of the order of
Size of nucleus is of the order of
How many times is the density of the nucleus more than the density of water ?
How many times is the density of the nucleus more than the density of water ?