Which of the following pairs has both members from the same period of the periodic table [CPMT 1985; UPSEAT 2001; BHU 2003]

Which of the following pairs has both members from the same period of

1.	Which of the following pairs has both members from the same period of the periodic table [CPMT 1985; UPSEAT 2001; BHU 2003]
A.	\[Na-Ca\]
B.	\[Na-Cl\]
C.	\[Ca-Cl\]
D.	\[Cl-Br\]
Answer» C. \[Ca-Cl\]