energy levels wrong.
Light Emitting Diode
Mg is the most metallic in character among the given atoms. It is an alkali earth metal with two valence electrons, making it more likely to lose electrons and exhibit metallic properties. Silicon (Si) and Germanium (Ge) are metalloids with properties between metals and nonmetals, while Iodine (I) is a nonmetal.
They emmit light because they have many stars.
Silicon (Si) and Germanium (Ge) are located in the same group (Group 14) of the periodic table, which means they have the same number of valence electrons. As a result, they exhibit similar chemical properties such as forming covalent compounds, sharing electrons, and having the ability to act as semiconductors.
Yes, galaxies emit light primarily from the stars within them. This light can range from visible light to other forms of electromagnetic radiation such as radio waves, infrared, ultraviolet, and X-rays. The light emitted by galaxies allows astronomers to study their composition, age, and distance from Earth.
Ge and si are not used for Making led's because these two emitts less amount in form of light and larger amount in form of heat.
For Si it is 0.6or 0.7 and for Ge 0.3 or 0.2.Both values correct for both si and ge
Ge
Ge has higher conductivity than Si. Because at room temperature the electron and hole mobility for Ge is larger than those of Si. Another explanation is the lower band gap of Ge than Si.
the energy required to break covalent bond in si is 1.1ev and in ge is 0.7ev
for germanium it is 0.3 and for silicon it is 0.7
格雷格(ge lei si )or 格瑞格(ge rui si)
Ge (Germanium) and Si (Silicon) are both from group 14 in the periodic table. They are in the same group but not in the same period. Ge is in period 4, while Si is in period 3.
0.6-0.7 V for Si at room temp. and 0.3 for Ge at room temp.
Si ge 32A he yi ge xiang jiao shao nian - 1996 is rated/received certificates of: Hong Kong:IIB
Light bulbs emit light.
Technetium doesn't emit light.