Answer
Rafael can go to the What's New option under the Help tab.
Answer:
The VLookup checks a value inside a table through matching over the 1st column.
Lookup a value in a table by matching on the first column and the matched value is returned from the table.
Explanation:
The formula for the VLOOKUP is
=VLOOKUP (value to be matched in the first column, table from which the value will be looked for, col_index is the column inside the table from where the value is fetched, [range_lookup] is true for the approximate match, and false for exact match)
Answer:
Hydrogen is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals. ... Hydrogen has a much smaller electron affinity than the halogens.