Answer :
Option A) 2.00 eV
Explanation : The conversion of J to eV is done with the following formula;

Here, we have the value of particle in terms of Joules which is 3.2 X

So, on substituting we get,

= 3.2 X

X


= 1.99 eV so, it can be rounded off to 2.00 eV.
uniquely identifies a chemical element. yupppppp
The answer is D. A positively charged sodium Ion and a negatively charged chlorine ion form an ionic bond.