The Modern periodic table has__: 

Answer: [A] seven periods and eighteen groups

Recently, the International Union of Pure and Applied Chemistry (IUPAC) have officially confirmed the permanent addition of four new elements to the periodic table. The IUPAC had announced last week that all four elements with atomic number 113, 115, 117 and 118 have met the criteria for discovery.Thus; it completed the seventh row of periodic table.

This question is a part of GKToday's Integrated IAS General Studies Module