Which of the following statement about a compound is incorrect? (I) A molecule of a compound has atom of different elements.

We know that if a matrix is of the order m x n, it has mn elements. Thus, to find all the possible orders of a matrix having 24 elements, we...

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...

We know that if n(A) = p and n(B) = q, then n(A × B) = pq. ∴ n(A × A) = n(A) × n(A) It is given that n(A × A)...

i. The variability in oxidation states of transition metals is due to the incomplete filling of d-orbitals in such a way that their oxidation states differ from each other by...

(b) : When the transition metals are in their highest oxidation state, they no longer have tendency to give away electrons, thus they are not basic but show acidic character...

(b) The melting point in group 15 increases upto arsenic and then decreases upto bismuth.

The correct answer is (c). (d) (c) The kinetic energy of the oxygen molecule increases and that of the hydrogen molecule decreases.  (d) The kinetic energy of the hydrogen molecule increases and that...

(b) K X-ray is emitted when a hole makes a jump from the K shell to some other shell. (c) The wavelength of K X-ray is smaller than the wavelength of...

(c) two extra neutrons and no extra electron