How many vertical columns are there in the periodic table ?

How many Horizontal rows are there in the periodic table ?

How many elements are there in the periodic table such that for every element name there is a single alphabet that symbolically represents it (for example, B-Boron, C-Carbon etc.)?

How many groups are there in the modern periodic table as per the latest IUPAC convention ?

How many elements are there in the third period ?

In the modern periodic table, the elements are arranged in the increasing order of their atomic number. This arrangement is based on the modern periodic law, which states that the properties of elements are a periodic function of their atomic numbers. In the modern periodic table, each column is called a group and each row is called a period. Elements within the same group show similarity and gradation in properties. This is due to the same number of electroms in the outermost shell . Based on the above paragraph, answer the following question: How many groups are there in the modern periodic table?