Answer: a. They produce ions when dissolved in water.
Explanation:
Acid : It is a substance that has ability of donating proton or hydrogen ion, when dissolved in water.
Acids are sour in taste.
The texture of an acid solution is sticky.
It changes the color of the litmus paper to red.
Base : It is a substance that has ability of donating hydroxide ion, when dissolved in water.
Base are bitter in taste.
The texture of an base solution is slippery.
It changes the color of the litmus paper to blue.
Thus both acids and bases produce ions when dissolved in water.
Answer:
Option a: positron emission.
Explanation:
In the transformation we have:
⁶⁷Ga → ⁶⁷Zn
The reaction is:
For Ga to become Zn, the atom nucleus has to lose a proton, so in the given options, the reaction that involves the transformation of a proton is the option a, positron emission.
In a positron emission, a proton becomes into a neutron and a positron:
Therefore, the correct answer is option a: positron emission.
I hope it helps you!