Explanation:
Bohr proposed that electrons revolve in certain allowed orbits with fixed energy, and they can jump between orbits by absorbing/emitting quanta of energy. This explained hydrogen spectrum. Electron cloud is quantum mechanical model; wave nature by de Broglie; uncertainty by Heisenberg.
Explanation:
In the liver, methanol is oxidized to formaldehyde, then to formic acid, which damages the optic nerve and can cause blindness or death. Ethanol is used as an antidote by competing for the enzyme alcohol dehydrogenase.
Explanation:
Neutron has mass approximately equal to proton (1.675 × 10⁻²⁷ kg) and no electric charge. Proton mass ~1.673 × 10⁻²⁷ kg, positive charge. Electron mass ~9.11 × 10⁻³¹ kg, negative charge. Positron is the antiparticle of electron, same mass, positive charge. Neutron's neutrality makes it important for nuclear stability.
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