LMS

The exact voltage required in gas discharge tube does not depend upon 

From discharge tube experiments, it is concluded that  

Consider the following reaction   4Be + 2He  6C + 1n This reaction is

Number of electrons, protons and neutrons present in respectively

Which order of mass is correct in ascending order

Which of the following specie has more electrons than neutrons 

A fast moving neutron can eject from nitrogen 

Positive rays give flash on 

The wave number of the light emitted by a certain source is 2 × 106 m-1. The wavelength of this light will be

The e/m ratio for the positive rays is maximum for

Total number of fundamental particles in one atom of is

Which of the following relationship is incorrect 

Which of the following is not the unit of wave number

An electron makes a transition from energy state E3 to E1 will emit a photon  of frequency 

Electronic configuration of species M²⁺ is 1s ² 2s ² 2p ⁶ 3s ² 3p⁶  4s ⁰ 3d ⁶ and its atomic weight is 56, number of neutrons in the nucleus of species M is

Which of the following quantum numbers is not derived from Schrodinger wave equation 

Magnetic quantum number is related to

Existence of pair of  lines in spectrum of sodium is explained by

According to Bohr’s atomic theory, the angular momentum (mvr) of an electron is equal to

Which set of quantum numbers is not possible

The last electron in the Na and K can be distinguished by

If the value of n = 4 what is probable value of ℓ

Which set of quantum numbers is not possible

The number of electrons in a shell can be calculated by formula

which quantum number is used to represent the subshells.

The maximum probability of finding an electron in a hydrogen atom according to Schrodinger is

The shape of p-orbital is 

Quantum Number values for 5p orbital is 

A sub shell having n = 6, and l = 3 is designated as   

The number of degenerate orbitals in p–subshell is

n + l value for 4f will be _________ and 5p will be _______

(An) ______ is a region of space in which there is a high probability of finding an electron in an atom 

According to quantum mechanics, the size of electronic shell is told by the quantum number 

How many numbers of clockwise electrons are present in helium?

Which of the following rule/principle helps us to determine order of filling of sub shells by electrons 

If the value of n = 4 what is probable value of ℓ

Electronic configuration of an atom is 1s² , 2s² ,2p⁴ .. Number of unpaired electrons are

Which of the following helps to predict valency of element

Which of the following contains unpaired electrons?

The number of orbitals in M – shell are

The atomic number of an element is sixteen. It belongs to period and group number of the periodic table respectively.

Without applying Hund’s rule the electronic configuration of one of the following cannot be justified

A pair of isoelectronic species is  

Which species has same number of electrons in valence shell and penultimate  (second last) shell

Which of the following specie has more electrons than neutrons

Which of the following does not correctly relate the arrangement of electrons

The electronic configuration of an element with atomic number 29 is

Which of the following oxides of nitrogen is isoelectronic with CO₊₂

Which of the following has minimum number of unpaired d-electrons

Number of unpaired electron in  p subshell of 'F' is