Quantum Numbers
Trending Questions
Q. Compound A is bubbled through bromine dissolved in carbon tetrachloride and the product is CH2Br−CH2Br.
(i) Draw the structural formula of A.
(i) Draw the structural formula of A.
Q. What are the sub shells present in 5th shell?
Q. Arrange the following principal quantum numbers of the orbitals in increasing order of energy.
- n = 1
- n = 2
- n = 3
- n = 4
Q. Elements A, B and C have atomic numbers 17, 19 and 10 respectively. State which one is:
(ii) a metal
(ii) a metal
Q. Elements A, B and C have atomic numbers 17, 19 and 10 respectively. State which one is:
(i) a non-metal
(i) a non-metal
Q. The maximum number of electrons in s, p and d sub shells are:
- 2 in each
- 2, 4 and 6
- 2, 6 and 10
- 2, 6 and 12
Q. assertion Magnetic moment of DY is highest among lanthankids reason orbital motion contributes magnetic momnet
Q. Mercury is a liquid metal because:
- it has a completely filled s-orbital
- it has a completely filled d-orbital that causes d−d overlapping
- it has a completely filled d-orbital that prevents d−d overlapping of orbitals
- it has a small atomic size
Q. What is role of isolated gaseous atom in Electron affinity concept?
Q. Which of the following sets of atomic numbers corresponds to elements belonging to s, d, f, p blocks respectively?
- 35, 37, 29, 70
- 35, 29, 70, 37
- 37, 29, 70, 35
- 37, 29, 35, 70
Q. 28. Which has lowest radius? A)3rd shell of H B)4th shell of He+ C)4th shell of Li2+ D)4th shell of Be3+
Q. Non-metals will be out of elements with atomic number 13, 31, 35, 54.
- 13, 31
- 35, 54
- 13, 54
- 31, 35
Q. The number of electrons required for oxygen (atomic number = 8) and phosphorus (atomic number = 15) to achieve an octet electronic configuration are:
Q. Number of nodes in above plot is:
- 1
- 2
- 3
- 4
Q. One element (A) is having four valence shell electron. Which of the following values will be maximum?
- EA of A
- IE5−IE3
- IE4−IE3
- IE2−IE1
Q. Correct order of ionisation energy are:
(I) Be > B
(II) Be > C
(III) N > O
(IV) N > F
(I) Be > B
(II) Be > C
(III) N > O
(IV) N > F
- I, III
- I, IV
- I, III, IV
- I, II, III, IV