Advertisements
Advertisements
प्रश्न
The radius of the innermost electron orbit of a hydrogen atom is 5.3 × 10–11m. The radius of the n = 3 orbit is ______.
विकल्प
1.01 × 10–11m
1.59 × 10–10m
2.12 × 10–10m
4.77 × 10–10m
Advertisements
उत्तर
The radius of the innermost electron orbit of a hydrogen atom is 5.3 × 10–11m. The radius of the n = 3 orbit is `underline(bb(4.77 xx 10^-10 m))`.
Explanation:
The radius of an atom whose principal quantum number is n is given by r = n2r0
Where r0 = radius of innermost electron orbit for hydrogen atom and r0 = 5.3 × 10–11m
For the second excited state, n = 3
∴ r = 32 × r0
= 9 × 5.3 × 10–11
r = 4.77 × 10–10m.
APPEARS IN
संबंधित प्रश्न
The difference in the frequencies of series limit of Lyman series and Balmer series is equal to the frequency of the first line of the Lyman series. Explain.
Use Bohr’s model of hydrogen atom to obtain the relationship between the angular momentum and the magnetic moment of the revolving electron.
In Bohr model of hydrogen atom, which of the following is quantised?
According to the Bohr theory of H-atom, the speed of the electron, its energy and the radius of its orbit varies with the principal quantum number n, respectively, as:
In form of Rydberg's constant R, the wave no of this first Ballmer line is
A set of atoms in an excited state decays ______.
The energy of an electron in the nth orbit of the hydrogen atom is En = -13.6/n2eV. The negative sign of energy indicates that ______.
Using Bohr’s Theory of hydrogen atom, obtain an expression for the velocity of an electron in the nth orbit of an atom.
What is the velocity of an electron in the 3rd orbit of hydrogen atom if its velocity in the 1st orbit is v0?
The de Broglie wavelength of an electron in the first Bohr’s orbit of hydrogen atom is equal to ______.
