Describe Bohr’s model of the atom.
Solution and Explanation
Postulates of Bohr’s Model of an Atom
→ The atom consists of a small positively charged nucleus at its center.
→ The whole mass of the atom is concentrated at the nucleus and the volume of the nucleus is much smaller than the volume of the atom.
→ All the protons and neutrons of the atom are contained in the nucleus.
→ Only certain orbits known as discrete orbits of electrons are allowed inside the atom.
→ While revolving in these discrete orbits electrons do not radiate energy. These orbits or cells are represented by the letters K, L, M, N etc. or the numbers, n = 1, 2, 3, 4,.... as shown in below figure.
Top Questions on The Structure of an Atom
- The number of magnetic quantum number values for the angular momentum quantum number \( l = 1 \) is:
- TS POLYCET - 2025
- Chemistry
- The Structure of an Atom
- An orbital can hold only two electrons. This can be explained:
- TS POLYCET - 2025
- Chemistry
- The Structure of an Atom
- Which type of atoms form cations easily?
- TS POLYCET - 2025
- Chemistry
- The Structure of an Atom
- Atoms with low ionization potential and large atomic size:
- TS POLYCET - 2025
- Chemistry
- The Structure of an Atom
- The experimental magnetic moment (3.4 BM) of a hydrated salt of \(Eu^{3+}\) at 300 K is significantly different from calculated value. The difference is due to (Given atomic number of \(E_u\) = 63)
- CUET (PG) - 2023
- Chemistry
- The Structure of an Atom
Questions Asked in CBSE Class IX exam
(i) The kind of person the doctor is (money, possessions)
(ii) The kind of person he wants to be (appearance, ambition)- CBSE Class IX
- The snake and the mirror
- Lushkoff is earning thirty five roubles a month. How is he obliged to Sergei for this?
- CBSE Class IX
- The beggar
ABCD is a quadrilateral in which AD = BC and ∠ DAB = ∠ CBA (see Fig. 7.17). Prove that
(i) ∆ ABD ≅ ∆ BAC
(ii) BD = AC
(iii) ∠ ABD = ∠ BAC.
- CBSE Class IX
- Congruence of Triangles
- Why does the author say that Iswaran seemed to more than make up for the absence of a TV in Mahendra’s living quarters?
- CBSE Class IX
- Iswaran the storyteller
- Here is your diary entry when you visited Agra. Read the points and try to write a travelogue describing your visit to Agra and the Taj Mahal. You may add more details.
January 2003 — rise before dawn — take the Shatabdi Express at 6.15 a.m. from Delhi — meet a newly-married couple on train — talk about Himachal Pradesh — get off the train — enter the once-grand city, Agra — twisted alleys — traffic dense — rickshaws, cars, people — vendors selling religious artifacts, plastic toys, spices and sweets — go to the Taj Mahal — constructed entirely of white marble — magical quality — colour changes with varying of light and shadow — marble with gemstones inside — reflection of the Taj Mahal in the pond — school-children, tourists — tourist guides following people.- CBSE Class IX
- Kathmandu