When Using VLOOKUP,the _____Argument Is Optional

question 63

Multiple Choice

When using VLOOKUP,the _____argument is optional.

• A)lookup_value
• B)table_array
• C)range_lookup
• D)col_index

---

Definitions:

MS Peak

Refers to a peak observed in a mass spectrum, representing a particular ion's mass-to-charge ratio.

M+2 Peak

A term used in mass spectrometry to describe the peak that appears two mass units above the molecular ion peak, often indicating the presence of elements like chlorine or bromine.

Molecular Formula

A representation of the number and type of atoms present in a molecule, showing the exact composition of a molecule but not its structure.

M/Z Values

In mass spectrometry, a ratio of the mass to the charge number of ions, used to identify and quantify substances in a sample.