Home
Class 12
PHYSICS
Carbon , silicon and germanium have four...

Carbon , silicon and germanium have four valence elcectrons each . These are characterised by valence and conduction bands separated by energy band - gap respectively equal to ` (E_g)_(c) (E_g)_(si) ` and ` (E_g)_(Ge) `. Which of the following statements ture ?

A

`(E_(g))_(Si) lt (E_(g))_(Ge) lt (E_(g))_(C)`

B

`(E_(g))_(C) lt (E_(g))_(Ge) gt (E_(g))_(Si)`

C

`(E_(g))_(C) gt (E_(g))_(Si) gt (E_(g))_(Ge)`

D

`(E_(g))_(C) = (E_(g))_(Si) = (E_(g))_(Ge)`

Text Solution

Verified by Experts

The correct Answer is:
c
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS

    NCERT TAMIL|Exercise ADDITIONAL EXERCISES|8 Videos

  • SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS

    NCERT TAMIL|Exercise ADDITIONAL EXERCISES|8 Videos

  • SEMICONDUCTOR ELECTRONICS

    NCERT TAMIL|Exercise EVALUATION (I. Multiple choice questions)|13 Videos

  • WAVE OPTICS

    NCERT TAMIL|Exercise EXERCISES|26 Videos

Similar Questions

Explore conceptually related problems

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 (E_(g))_(C) , (E_(g))_(Si) and (E_(g))_(Ge) . Which of the following statements is true ?

We are familiar with the semi conductors Silicon and Germanium . a. With a necessary schematic diagram , briefly explain the characteristics of an intrinsic semiconductor. b. Draw the energy bands of a n-type semiconductor. c The following figure represents a d . Draw a typically illuminated P-n junctions solar cell. e. LED convert............ energy to light.

Suppose f(x)=a x+ba n dg(x)=b x+a ,w h e r eaa n db are positive integers. If f(g(20))-g(f(20))=28 , then which of the following is not true? a=15 b. a=6 c. b=14 d. b=3

Seven rods A, B, C, D, E, F and G are joined as shown in figure. All the rods have equal cross-sectional area A and length l. The thermal conductivities of the rods are K_(A)=K_(C)=K_(0) , K_(B)=K_(D)=2K_(0) , K_(E)=3K_(0) , K_(F)=4K_(0) and K_(G)=5K_(0) . The rod E is kept at a constant temperature T_(1) and the rod G is kept at a constant temperature T_(2) (T_(2)gtT_(1)) . (a) Show that the rod F has a uniform temperature T=(T_(1)+2T_(2))//3 . (b) Find the rate of heat flowing from the source which maintains the temperature T_(2) .

Atom of seven elements A,B ,C, D, E,F and G have a different number of electronic shells but have the same number of electrons in their outermost shells. The element A and C combine with chlorine to form an acid and common salt respectively. The oxide of element A is liquid at room temperature and is a neutral substance while the oxides of the remaining six elements are basic in nature . Based on the above information, anwer the following question given ahead : Will element A to G belong to the same period or same group of the periodic table ?

Atom of seven elements A,B ,C, D, E,F and G have a different number of electronic shells but have the same number of electrons in their outermost shells. The element A and C combine with chlorine to form an acid and common salt respectively. The oxide of element A is liquid at room temperature and is a neutral substance while the oxides of the remaining six elements are basic in nature . Based on the above information, answer the following question given ahead : Which one of the given elements is likely to have the smallest atomic radius ?.

Atom of seven elements A,B ,C, D, E,F and G have a different number of electronic shells but have the same number of electrons in their outermost shells. The element A and C combine with chlorine to form an acid and common salt respectively. The oxide of element A is liquid at room temperature and is a neutral substance while the oxides of the remaining six elements are basic in nature . Based on the above information, anwer the following question given ahead : Show the formation of the compound by a combination of element C with chlorine with the help of electronic structure .

Atom of seven elements A,B ,C, D, E,F and G have a different number of electronic shells but have the same number of electrons in their outermost shells. The element A and C combine with chlorine to form an acid and common salt respectively. The oxide of element A is liquid at room temperature and is a neutral substance while the oxides of the remaining six elements are basic in nature . Based on the above information, anwer the following question given ahead : Write the formula of the compound formed by the reaction of the element A with oxygen .