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 can undergo both addition reactions and substitution reactions? ...
Elements X and Y have electronic configurations 1s22s22p4 and 1s22s22p...
Calculate the volume of 0.5 mol dm-3 H2So4 that is neutralized by 25 cm3 of 0.1 mol dm-3 NaOH? ...
The functional groups present in the compound above are ...
The most electropositive elements among the following is ...
Which of the following non-metals reacts most readily with metals? ...