1.

Is it possible to have an element with atomic number 1.5 placed between hydrogen and helium ?

Answer»

Solution :(1) The atomic number of an element is always definite and WHOLE number.
(2) In the modern periodic table, elements are ARRANGED in increasing order of their atomic NUMBERS.
(3) The atomic number cannot be represented in fraction number. THUS, an element with atomic number 1.5 cannot be placed between hydrogen and helium.


Discussion

No Comment Found

Related InterviewSolutions