When the speed of an electron increases, the specific charge.
Decreases
Increases
Remains same
None of these
Which of the following fundamental particles is not deflected by a magnetic field?
Proton
Neutron
Electron
Positron
Which of the following has zero electron affinity?
Oxygen
Fluorine
Nitrogen
Neon
The firmness with which an electron is held by an atom is a measure of its.
Electronegativity
Ionisation potential
Ionic character
Metallic character
Mass number of an atom represents the number of.
Protons only
Protons and neutrons
Protons and electron
Neutrons and electrons
Bond length decreases with.
Increase in the size of the atom
Increase in the number of bonds between the atoms
Decrease in the number of bonds between the atoms
Decrease in the bond angle.
Bohr’s model can explain.
Spectrum of hydrogen atom only
Spectrum of any atom or ion having one electron only
Spectrum of hydrogen molecule
Solar spectrum
Elements having 7 electrons in the valence shell are called.
Halogens
Chalcogens
Alkali metals
Alkaline earths.
In a stationary orbit of an atom the electron will be
Revolving with constant energy
At rest
Losing energy constantly
Losing energy discontinuously.
