SSC MTS EXAM

Detailed explanation-1: -A period on the periodic table is a row of chemical elements. All elements in a row have the same number of electron shells. Each next element in a period has one more proton and is less metallic than its predecessor.

Detailed explanation-2: -The number of electron shells is therefore the same across a period but increases when moving down a group.

Detailed explanation-3: -In the periodic table, the periods are the horizontal rows that extend from left to right. These periods consist of as few as two elements and as many as thirty-two elements. The repeating pattern across the periods of the periodic table is the filling of each energy level with electrons.

Detailed explanation-4: -The periodic table is organized into groups (vertical columns), periods (horizontal rows), and families (groups of elements that are similar). Elements in the same group have the same number of valence electrons. Meanwhile, elements in the same period have the same number of occupied electron shells.