Question

The last element in period 2 is lithium.
A.True
BFalse

Answer 1

Hint: The atomic number of lithium is 3 and it is a s-block element. The atomic number of the last element in the second period is 10.

Complete Step by step Solution:
The elements in the periodic table are arranged on the basis of their atomic numbers according to the modern periodic law which states that, “The properties of the elements are periodic functions of their atomic numbers”. There are a total of eighteen groups and eight periods in the periodic table. Period 2 has a total of eight elements and the first element of the periodic table is lithium that occurs in group 1 and last element is neon that occurs in group 18 of the periodic table.
Hence, the statement is false.

Hence, the correct answer is option B.

Notes:
Periods are the horizontal rows of the periodic table while the groups are the vertical columns of the periodic table.
There are a total of 118 elements in the periodic table now, out of which the elements upto atomic number 92 are naturally occurring while the elements atomic number 92 onwards are man made.
The elements in the period 2 of the periodic table are: lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon.
There are only two elements in the period 1 periodic table. The elements being hydrogen and helium.
Lithium is an alkali metal and is basic in nature that can form strong basic oxides on reaction with water.