Two elements, X and Y are in the same group on the period...
Two elements, X and Y are in the same group on the periodic table because they both have the same
number of electronic shells
number of valence electrons
atomic size
atomic number
Correct answer is B
The members of the same group always have the same number of electrons in the outer shell (i.e number of valence electrons).
Which of the following statements about displacement reaction is correct? ...
The following can be obtained directly from the destructive distillation of coal except...
What are the two gases associated with the formation of acid rain? ...
Which of the following acts as both reducing and oxidized agent? ...
When excess ethene is shaken with acidified KMnO4 solution, the product obtained is...