Questions: Element Symbols and Names

Question 1

What is the chemical symbol for sodium?

• A. So
• B. Sd
• C. Na
• D. S

Answer: (C)

Sodium's symbol is Na, which comes from its Latin name 'natrium.' The symbol S belongs to sulfur. This is one of several cases where the symbol does not match the English name.

Question 2

In a two-letter element symbol, both letters are capitalized.

• T. True
• F. False

Answer: False

The first letter is always uppercase and the second letter is always lowercase. This rule prevents confusion — for example, Co means cobalt (one element), while CO means one carbon atom and one oxygen atom (two elements).

Question 3

Why does gold have the symbol Au instead of Go or Gd?

Model answer: Au comes from gold's Latin name, 'aurum.'

Many element symbols were established when Latin was the international language of science. Gold's Latin name is 'aurum,' giving it the symbol Au. Similarly, silver comes from 'argentum' (Ag), iron from 'ferrum' (Fe), and lead from 'plumbum' (Pb). These historical symbols are used worldwide regardless of what language a scientist speaks.