It is B, and also for a moment I didn't understand that 4.69 x 10^22. I almost did this whole problem wrong.
G. H2S contains two hydrogen atoms
Answer:
The answer is D."We see whole images, while feature detectors detect specific"
It depends if it occurs naturally it has oxidation number of 0
but when it react with other element it has an oxidation number of -1
Answer:
A radical is a group of atoms behaving as a unit in a number of compounds where as an element is a species of atoms having the same number of protons in their atomic nuclei.
Explanation: