Answer:
Polar Covalent
Explanation:
Chlorine and Fluorine are both halogens. They are in group VII.
The Pauling's electronegativity value of these elements are:
F = 4.0
Cl = 3.0
Electronegativity of an element is a property that combines the ability of its atom to lose and gain electrons. It can be used to predict bond type.
For heteronuclear molecules where the electronegativity difference is between 0.5 and 1.7 there will not be an equal sharing of the electron pair between the atoms involved.
The bond that results is a Polar Covalent bond.
When the electronegativity difference is zero or less than 0.5, a non-polar covalent bond forms. There would be an equal sharing of the electron pair donated.
The element that has the smallest atomic radius is <u>titanium</u>
<em><u>explanation</u></em>
- Calcium,potassium, scandium and titanium are in period 4 in the periodic table.
- Generally the atomic radius decreases across the period (from the left to the right) . This is because across the period there is increase in nuclear charge which make electrons been strongly attracted to the nuclear.
- Titanium is in atomic number 22 thus it has more nuclear charge that calcium,potassium and scandium therefore titanium has the smallest atomic radius.
<span>1. D Domain</span> <span><span>
<span>2. </span></span>K Kingdom</span> <span><span>
<span>3. </span></span>P Phylum</span> <span><span>
<span>4. </span></span>C Class</span>
<span><span>5. </span>O Order</span> <span><span>
<span>6. </span></span>F Family</span> <span><span>
<span>7. </span></span>G Genus</span>
<span><span>8. </span>S Species</span>
The hierarchy of species is mainly used by taxonomist in order to classify, organize and systematize certain species in both the animal and plant kingdom so to speak –living things. These helps them if found a new discovered specie, they cluster it into the appropriate category into where it fits best. There are certain factors to categorize though.
Answer:
The addition of nutrients to water by human activity is called artificial Eutrophication. Nonpoint-source-pollution comes from many small sources.
Explanation:
hope this helps :)
Answer:
Calcite
Explanation:
Calcite, whose composition is CaCO3, has the amazing ability to fizz in contact with hydrochloric acid.
From the geological point of view, this test is commonly performed to differentiate calcite from other minerals of similar color, brightness and habit. Do not confuse calcite with aragonite that also reacts in this way against HCl.
On the other hand we can analyze this experiment from the chemical point of view, since the following chemical reaction takes place:
CaCO3 + 2HCl -> CaCl2 + H2O + CO2
The products of the reaction are released in liquid form (water with dissolved CaCl2), and in bubbles of carbon dioxide gas.
