Answer: add 2 valence electrons
Explanation:
You have to make up for the negative electrons so you add them
Answer:
An example of a single replacement reaction occurs when potassium (K) reacts with water (H2O). A colorless solid compound named potassium hydroxide (KOH) forms, and hydrogen gas (H2) is set free.
Explanation:
Answer:
A cloud occurs when evaporated water condenses into visible water or ice. The three factors required in forming a cloud include: moisture, condensation, and temperature.
Explanation:
Alpha decay involves the loss of an alpha particle, aka a helium nucleus. This results in the mass number of the original element decreasing by 4 and the atomic number decreasing by 2. Assuming 23942u is uranium (92), the resulting element's atomic number is 90, making it thorium.
