Question

How many elements are present in the compound : na2s2o3


a. 2

b. 3

c. 4

d. 7

Answer 1

Elements on a Periodic Table

An element is a pure substance that cannot further be broken down into other substances. Each square on a periodic table represents one element.

Solution

$Na_2S_2O_3$

In this compound, we have Na, sodium, S, sulphur, and O, oxygen. Therefore, there are three elements present in this compound.

Answer

3