potassium is an alkaline metal with the atomic 19 and number of valence electron 1. the formula of hydride of potassium is KH. boron and carbon are placed in group 13 and 14 respectively with valence electron 3 and 4.write the formula of the hydride of boron and carbon giving reason for your answer.

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Solution

$B^{3} H^{1} (A s B o r o n h a s t h r e e e l e c t r o n s i n i t s v a l e n c e s h e l l (E l e c t r o n i c c o n f i g u r a t i o n i s 2, 3) a n d h y d r o g e n h a s 1 (E l e c t r o n i c c o n f i g u r a t i o n i s 1) C r o s s m u l t i p l y B H_{3} C^{4} H^{1} (A s c a r b o n h a s f o u r e l e c t r o n s i n i t s v a l e n c e s h e l l (E l e c t r o n i c c o n f i g u r a t i o n i s 2, 4) a n d h y d r o g e n h a s 1 (E l e c t r o n i c c o n f i g u r a t i o n i s 1)) C r o s s m u l t i p l y C H_{4}$

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