Structure of At...

The number of electrons in an element with atomic number A and mass number B will be

A series of orbitals are given below. Identify the sets which represent the correct order of filling up of orbitals.
(A) $$3s,\ 3p,\ 3d,\ 4s,\ 4p$$
(B) $$4s,\ 4p,\ 5s,\ 4d,\ 5p,\ 4f$$
(C) $$2s,\ 2p,\ 3s,\ 3p, \ 4s,\ 3d,\ 4p$$
(D) $$1s,\ 2s,\ 2p,\ 3s,\ 3p,\ 3d$$

An atom has 16 neutrons in its nucleus. The atomic no. of the element is 15 and the mass number of the element is__________.

For an atom of a given element, the number of electrons is given by _________.

Isotopes are nuclei which have

Splitting of spectral lines in the presence of electric field is known as :

The number of unpaired electrons in a chromic ion $$Cr^{3+}$$ $$($$atomic number $$24)$$ is:

The number of electrons in an element with atomic number X and mass number Y will be:

"The atom as a whole is electrically neutral", is a statement proposed by which atomic model?

Which of the following has maximum energy?