Answer:
1:1
Explanation:
The ratio of metal cationic atom to non-metal anionic atom in the compound is 1:1.
This is an ionic compound.
- This is because metal cationic atom has two valence electrons.
- Non-metal anionic oxygen has six valence electrons
- Calcium loses two of its valence electrons to be isoelectronic with Ar and this confers a stable configuration to it.
- Non-metal oxygen atom accepts the electrons and adds 2 to its 6 electrons to become isoelectronic with neon.
- So, 1 metal cationic atom combines with 1 non-metal anionic atom to form the compound.
<span>3. All nucleotides are made up of three component compounds:
a 5-carbon sugar (ribose or deoxyribose),
a phosphate group, and
a nitrogenous base.</span>
Answer:
Yes
Explanation:
Scientific laws must always be accompanied by theories. Without theories, laws cannot be formed. In other words, scientific laws are made from scientific theories.
<em>When a hypothesis has been tested by several independent researchers and found to be true, this leads to the development of a theory. A theory becomes a law when it is able to hold true against a wide range of similar phenomena.</em>