You're comparing three different atoms. Atom A has 9 protons in the nucleus, Atom B has 10 protons, and Atom C has 11 protons. Explain each answer in detail. In each answer, include a diagram showing the number of electrons in each shell of the atom.

a. Which atom would be least likely to react with other atoms? Why?

b. Which would form a positively charged ion? Why?

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.