Which of the following elements resembles boron the most? (a)Aluminium (b)Gallium

It is given that: n(S) = 21, n(T) = 32, n(S ∩ T) = 11 We know that: n (S ∪ T) = n (S) + n (T) – n (S...

It is given that:  n(X) = 40, n(X ∪ Y) = 60, n(X ∩ Y) = 10  We know that: n(X ∪ Y) = n(X) + n(Y) – n(X ∩ Y)  ∴ 60 = 40...

(H- ) Hydride ion 

a) -3 & +3 b) +3 & +1 c) +3 & +1

a) Barium does not constitute the Boron Family

a) Aluminium

d) Boron of the Boron Family is a non-metal

(a) Boron elements show oxidation state of +3 only

(b)The boron atoms are linked through hydrogen atoms 

(d) Humayun’s tomb at Delhi is placed in the centre of a large garden and resembles as a prototype of the Taj Mahal. Fourteen years after Humayun’s death, Hamida Banu...