Subject :NSO Class : Class 9
Outer shell configurations of five atoms (P - T) are given as:
Which of the following statements is/are incorrect about these atoms?
I. Elements S and T have same valency.
II. Elements Q and T will form a compound of formula
Q2T3.
III. Proton number of T is 12.
IV. R can form a cation as well as an anion.
AII and III only
BI only
CIII and IV only
DI, II and IV