Answer:
Ionic size increases from top to bottom within the group.
Explanation:
- Ions are formed when neutral atoms of elements gain or lose electron(s).
- The ionic radius is the distance from the nucleus of an ion to the outermost energy level.
- The ionic size or radius increases down the group as the number of energy level increases.
- Therefore, an ion of an element lower in the group will be larger than the ion of an element higher in the group.
- For example, an ion of potassium, K+, is larger in size compared to the ion of sodium, Na+ since K+ has more energy levels than Na+.
Answer:
New substances are produced by a chemical change
Answer:
answer is c
Explanation: cause there breaking it
228 grams
start with mass of Cr multiply by molar mass of Cr mole to mole ratio between Cr and Cr2O3 times molar mass of Cr2O3
