An atom of an element has 19 electrons. What is the total number of p-orbital?

An atom of an element has 29 electrons. The nucleus of the atom contains 35 neutrons. Find the number of protons in the nucleus and the mass number.

If a set has n elements then the total number of subsets of A is

An atom of element A has 3 electrons in its valence shell and an atom of B has 6 electrons in its valence shell. The formula of the compound between these two atoms will be :

If a set A has 4 elements then total number of proper subsets of set A is

Give the name and atomic number of the noble gas element in which the total number of d-electrons is equal to the difference in the number of s and p electrons

An atom has electronic configuration 2, 8, 2. (i) What is the atomic number of this element ? (ii) What is its valency ? (iii) To which of the following elements would it be chemically similar and why ? (Be-4, 0-8. Justify your answer.)

An atom has electronic configuration 2, 8, 7 what is the atomic number of this element ?