A 0.7 mL drop of concentrated of HNO3(15.7 M) is accidentally added to 550 mL of the solution described in a). Calculate the pH of the solutionafter adding HNO3. How does this new pH valuecompare to the original pH

the answer is true.

14,16 18 reacts with group

i wish i could but this one is weird give me abc and i can solve it.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.