What are the atomic numbers of elements whose outermost electrons are represented by
a) `3s^1`
b) `2p^3`
c) `3p^5`

Which of the atomic number represent the s-block elements ?

Calculate the oxidation number of underlined atoms. H_3(P)O_3

For a reaction, 2P to 3Q , the rate of reaction (r ) can be represented as ______.

The quantum number for the last electrone n = 2 , l=0 , m=0 , s=1/2 represents the element.

The number of electrons, protons and neutrons in "^31P^(3-) ion is respectively___ .

The number of unpaired electrons in the p-subshell of oxygen atom

Which number cannot represent a probability? a) 2/3 b) 1.5 c) 0.15 d) 0.7

The number of unpaired electrons in 1s^2 2s^2 2p^4 is ____.

If (1, 3), (2, 5) and (3, 3) are the three elements of A xx B and the total number of elements in A xx B is 6 then the remaining elements of A xx B are