The halogen with smallest electron affinity is
Fluorine
Chlorine
Bromine
Iodine
Which of the following has zero electron affinity?
Oxygen
Nitrogen
Neon
Mass of an electron is.
9.1 × 10-28g
9.1 × 10-25g
9.1 × 10-10g
9.1 × 10-18g
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
Linus pauling received the Nobel prize for his work on.
Atomic structure
Photosynthesis
Thermodynamics
Chemical bonds
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.
An atom has mass number 23 and atomic number 11. The atom has _____ electrons, ____ protons and _____neutrons.
11, 12, 13
11, 11, 12
11, 11, 13
11, 14, 15
Positive charge is an atom is.
Scattered all over the atom
Concentrated in the nucleus
Revolving around the nucleus
None of these
Which of the following particles is the heaviest?
Meson
Electron
Proton
Neutron
Which of the following fundamental particles is not deflected by a magnetic field?
Positron