The sum of protons and neutrons is the mass number. The mass of an atom is contained mainly within the nucleus where the protons and neutrons live. An electron's mass does not contribute significantly to the mass of the atom.
Each proton and each neutron is given an atomic mass of one. Because an electron has hardly any mass as at all, the mass number only takes into account the masses of protons and neutrons. The mass number is different for each isotope of an element. Isotopes are forms of the same element that have different numbers of neutrons in the nucleus. The atomic mass shown on the periodic table comprises the weighted average of an element's isotopes.Learn More
The quantization of energy refers to the absorption or emission of energy in discreet packets, or quanta. As the intensity of electromagnetic energy increases or decreases, it steps up or down from one quantized level to another, rather than follow a smooth and continuous curve. The quantization of energy, also known as "quantum theory," describes how energy can only be lost or gained in multiples of a smallest possible unit of energy, which is referred to as a "quantum."Full Answer >
Sulfur has 16 electrons. It also has 16 neutrons and 16 protons. Sulfur has the chemical symbol S and is a non-metal. It belongs to group 16 on the periodic table.Full Answer >
Phil Plait of Bad Astronomy states that if a person were to approach a black hole feet-first, it would pull his feet at a faster and stronger rate than it would pull his head. This essentially means that the person's body would be stretched into a long, thin strand until it was eventually fragmented.Full Answer >
According to Pelamis Wave Power, wave energy is energy transferred from wind forces to the waves of a body of water, such as the ocean. Wave energy should not be confused with tidal energy.Full Answer >