Nature of electromagnetic radiation, photoelectric effect, spectrum of the hydrogen ... of elements of atomic and ionic radii, ionization enthalpy, electron gain enthalpy, valence, oxidation ...

Hydrogen is the lightest known element and possesses the lowest ... Metals or basylous elements possess from one to three valence electrons, are therefore strongly electro-positive.

UNIT 2: ATOMIC STRUCTURE Nature of electromagnetic radiation, photoelectric effect, spectrum of the hydrogen ... elements of atomic and ionic radii, ionization enthalpy, electron gain enthalpy ...

By twisting layers of graphene, researchers discovered a unique electronic crystal where electrons freeze in place yet allow ...

We find that it is the 4s orbital electrons that are ionised first before the 3d orbitals. We have to conclude that, ironically for the d-block elements, the 4s orbitals are in fact higher in energy ...

Photovoltaics (PVs), devices that can convert sunlight into electrical power, are becoming increasingly widespread and more ...

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. When burned or used in fuel cells, hydrogen produces nothing but water, making it an ...

As the world shifts away from fossil fuels, clean hydrogen has emerged as a leading candidate for next-generation energy due to its zero carbon emissions. However, existing hydrogen production ...