Structure of th...

In a species, the number of electrons is more than the number of protons. Predict its nature.

Which of the two statements is/are true?

Statement A : The nature of cathode rays depends on the nature of gas taken in the discharge tube.
Statement B : Cathode rays rotate a light paddle wheel placed in their path.

Valency of an element is 8; It means it has ___ electrons in its outermost shell.

The order of the energy of the energy shells is:

Which of the following statements is not true about neutrons?

Match the following with the correct response:

The sum of the first ‘n’ terms of an A.P. is given by

Match the following with the correct response:

In K⁺ and K⁻:

(a) Number of electrons are same
(b) Number of protons are same
(c) Number of neutrons are same
(d) Number of shells are same