The elements that belong to the third period of the perio...
The elements that belong to the third period of the periodic table are?
Li, Be, Al and P
Na, P, O and Cl
B, C, N and O
Na, Mg, S and Ar
Correct answer is D
Elements in period 3 have 3 shells in their atomic structure.
These include elements from sodium to argon.
The sulphide which is insoluble in dilute hydrochloric acid is ...
Aluminium is extracted commercially from its ore by? ...
Polyatomicity is illustrated by molecules of ...
The aqueous solution which has pH > 7 is ...
2X(aq) + MnO2(s) + 4H+(aq) → X2(g) + Mn2+(aq) + 2H2O. The reaction above can be used for the labo...
Which of the following metals exists as liquid at ordinary temperature? ...