Question

The atomic number of the element unnilennium is

• A. $109$
• B. $102$
• C. $119$
• D. $108$

Answer 1

The correct option is A

$109$

The explanation for the correct option:

Option (A): $109$

1. New elements are continuously being discovered, and disputes over naming are common. Sometimes the element discovered might have previously been known in a different period. They have therefore developed a nomenclature to prevent name confusion.
2. The following are the keywords for the numbers according to the names given- $0-$nil, $1-$un, $2-$bi, $3-$tri, $4-$quad, $5-$pent, $6-$hex, $7-$sept, $8-$oct, $9-$enn.
3. Breaking the name given Unnilennium and ium is added at the end, we get Un+nil+enn+ium, and assigning them numbers to each word, we get$1+0+9=109$.

Therefore, The atomic number of the element unnilennium is $109$