Ionic, think about the way metals share electrons with other metals, resulting in malleability.
Was there supposed to be a picture?
Answer:
D
Explanation:
The chemical properties of an atom is majorly influenced by the number of electrons which are present in the valence shell of its atom. This number helps us to know if the atom is a metal , non-metal , metalloid, or a noble gas. Properties like electro-negativity and electro-positivity depends on the valence electrons. metals with fewer electrons in their valence shell, like sodium have strong electro-positivity, while non-metals which higher number of electrons in their outermost shell like chlorine have a high electronegativity
pH of the solution is calculated using the following formula:
![pH=-log{[H^{+}]}](https://tex.z-dn.net/?f=pH%3D-log%7B%5BH%5E%7B%2B%7D%5D%7D)
Here, ![[H^{+}]](https://tex.z-dn.net/?f=%5BH%5E%7B%2B%7D%5D)
is concentration of hydrogen ion.
Initial value of pH is 6.7, calculate concentration of hydrogen ion from this as follows:
![[H^{+}]=10^{-pH}](https://tex.z-dn.net/?f=%5BH%5E%7B%2B%7D%5D%3D10%5E%7B-pH%7D)
Putting the value,
![[H^{+}]=10^{-6.7}=1.9952\times 10^{-7}](https://tex.z-dn.net/?f=%5BH%5E%7B%2B%7D%5D%3D10%5E%7B-6.7%7D%3D1.9952%5Ctimes%2010%5E%7B-7%7D)
Thus, initial concentration of hydrogen ion is 
.
Now, final pH value is 8.7, calculate concentration of hydrogen ion as follows:
![[H^{+}]=10^{-8.7}=1.9952\times 10^{-9}](https://tex.z-dn.net/?f=%5BH%5E%7B%2B%7D%5D%3D10%5E%7B-8.7%7D%3D1.9952%5Ctimes%2010%5E%7B-9%7D)
Thus, final concentration of hydrogen ion is 
.
The ratio of final to initial value will be:
Thus, if pH increases from 6.7 to 8.7, concentration of hydrogen ion becomes 
of the initial value.
