Chemistry, asked by bhaktishukla2016, 11 hours ago

. A Q.5 Atomic numbers of the following elements are given below: A = 8; B = 7; C = 17; D = 11; E = 20 1. State which of the above is a divalent metal. 2 State which of the above is a non-metal. 3 State the type of bonding between two atoms of 'A'. 4 State the type of bonding between 'D' & 'C'. State the number of covalent bonds formed in a molecule of 'B^2.​

Answers

Answered by pragyamobra83
6

Answer:

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Answered by vikashpatnaik2009
0

Answer:

2y^3+y^2-2y-1

let p(y) = 2y^3+y^22y^3+y^2-2y-1

By trial,we find that

p(1)=2(1)^3+(1)^2-2(1)-1

= 2 + 1 - 2 -1=0

By factor theorem,(y -1)is a factor of p(y)

Now

2y^3+y^22y^3+y^2-2y-1

= 2x^2(y-1) +3y(y-1)+1(y-1)

= (y-1) (2y^2+3y+1)

= (y-1) (2y^2+2y+1)

= (y-1) (2y(y+1) +1 (y+1))

= (y-1) (y+1) (2y+1).

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