`(E_(g))_(Si) lt(E_(g))_(Ge)lt(E_(g))_(C)``(E_(g))_(C)lt(E_(g))_(Ge)gt(E_(g))_(Si) ``(E_(g))_(C)gt(E_(g))_(Si)gt(E_(g))_(Ge) ``(E_(g))_(C)=(E_(g))_(Si)=(E_(g))_(Ge) ` Show
Solution : The correct statement is (c). <br> Of the three given elements, the energy band gap of carbon is the maximum and that of germanium is the least. <br> The energy band gap of these elements are related as: `(E_(q))_(C) gt (E_(q))_(Si) gt (E_(q))_(Ge)` Similar questions Q. Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to
(Eg)C,(Eg)Si and
(Eg)Ge.Which
of the following statements is true? Q. Carbon, Silicon, and Germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by
(Eg)C,(Eg)Si, and
(Eg)Ge respectively. Which one of the following
relationships is true in their case: Q. Carbon, Silicon and Germanium atoms have limn valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by
(Eg)c,(Eg)si and
(Eg)Ge respectively. Which one of the following relationship is true in their case? Q. Assertion :In some solids, the valence band is
completely filled while the next higher band separated by an energy gap of few electrons-volts is completely empty. Reason: In insulators the energy band completely filled with electrons( the valence band) and above it is empty band (the conduction band) Q. Assertion :If there is
some gap between the conduction band and the valence band, electrons in the valence band all remain bound, and no free electrons are available in the conduction band. Reason: Some of the electrons in the valence band may gain external energy to cross trhe gap between the conduction band and the valence band. View More Solution It is given that the carbon, silicon and germanium atoms have four valence electrons, the energy band gap of carbon, silicon and germanium is (Eg)C, (Eg)Si and (Eg)Ge respectively.The energy band gap of carbon is maximum and the energy band gap of germanium is minimum among all.So, the correct order of the energy band gap is,(Eg)C> (Eg)Si > (Eg)GeHence, the correct statement is (c).Does silicon have 4 valence electrons?-As in silicon, four electrons are present in the outermost shell, so silicon has Four valence electrons.
What elements has 4 valence electrons?Group 4A (or IVA) of the periodic table includes the nonmetal carbon (C), the metalloids silicon (Si) and germanium (Ge), the metals tin (Sn) and lead (Pb), and the yet-unnamed artificially-produced element ununquadium (Uuq). The Group 4A elements have four valence electrons in their highest-energy orbitals (ns2np2).
What is the valence electrons for Si?Hence, the number of valence electrons in silicon is four.
Which group of atoms has 4 valence electrons?The number of valence electrons. |
Does SI have four valence electrons?
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