1+1.6p_(1)+2.6p_(2)+.....+6.6p_(6)=

1+1.^(6)P_(1)+2*^(6)P_(2)+....+6.^(6)P_(6)=

If (1+x+x^(2)+....+x^(p))^(6)=a_(o)+a_(1)x+a_(2)x^(2)+.......+a_(6p)X^(6p) ,then the value of : (1)/(p(p+1)^(6))[a+2a_(2)+3a_(3)+...+6pa_(6p)] is

Name the element with the following electronic configurations . (a) 1s^(2)2s^(2) 2p^(6) 3s^(2) 3p^(1) (b) 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(1) (c ) 1s^(2) 2s^(1) 2p^(6) 3s^(2) 3p^(6) 3d^( 5) 4s^(1)

Find r if (i) .^(5)P_(r) = 2 .^(6)P_(r-1) (ii) .^(5)P_(r) =^(6)P_(r-1) .

The probability function of the binomial distribution is P(x)= ((6), (x))p^(x)q^(6-x), x= 0, 1, 2, ....., 6. If 2P(2) = 3P(3) then value of q is ……….

Name the element with the following electronic configurations . (a) 1s^(2)2s^(2) 2p^(6) 3s^(2) 3p^(1) (b) 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(1)

The electronic configurations of some elements are given below: (i) 1s ^(2) 2s ^(2) 2p ^(6) 3s ^(1) (ii) 1s ^(2) 2s ^(2) 2p ^(6) 3s ^(2) 3p ^(6) 4s ^(2) 3s ^(1) (iii) 1s ^(2) 2s ^(2) 2p ^(3) (iv) 1s ^(2) 2s ^(2) 2p ^(6) 3s ^(2) 3p ^(6) 4s ^(2) (v) 1s ^(2) 2s ^(2) 2p ^(6) 3s^(2) 3p ^(5) (vi ) 1s ^(2) 2s ^(2) 2p^(6) 3s ^(2) 3p ^(3) (vii) 1s^(2) 2s ^(2) 2p^(6) (viii) 1s ^(2) 2s ^(2) 2p ^(6) 3s ^(2) 3p ^(4) Name the elements. Out of these which 1. is an alkaline earth metal 2. has lowest chemical reactivity 3. belong to group 15 of the periodic table 4. is a transition element 5. is halogen 6. belong to p-block 7. belong to second period.

If alpha,beta roots of x^(2)-6p_(1)x+2=0,beta,gamma are roots of x^(2)-6p_(2)x+3=0and gamma,alpha are roots of equation x^(2)-6p_(3)x+6=0 where p_(1),p_(2),p_(3) are positive then The values of p_(1),p_(2),p_(3) respectively are