Give the correct order or initials T (true) or F (false) for following statements.

(P) Top positions of Lother-Meyer's atomic volume curve are occupied by alkali metals. 

(Q) Number of elements presents in the fifth period of the periodic table are 82. 

(R) 2nd IP. of Mg is less than the 2nd IP of Na. 

(S) A p-orbital can take a maximum of six electrons.

The correct order or initials T (true) or F (false) for the following statements is TFTF.

The correct or true statements are,

(P) Top positions of Lother-Meyer's atomic volume curve are occupied by alkali metals. 

 (Q)2nd IP. of Mg is less than the 2nd IP of Na. 

The incorrect or false statements are,

(R) Number of elements presents in the fifth period of the periodic table are 82. 

(S) A p-orbital can take a maximum of six electrons.

 Hence, the option A is correct.