Answer: Option (A) is the correct answer.
Explanation:
A group in a periodic table is represented by a column. And, when we move down a group then there occurs an increase in atomic size or atomic radii of the elements.
This is because number of electrons add into new shells which leads to increase in atomic radii of the element.
Therefore, if we say that two elements in a group have similar atomic radii then it is false.
Whereas the two elements of a group might have a high melting point.
Also the statements, the two elements both are highly reactive in oxygen and the two elements both bonds with chlorine to form a salt in a 1 to one ratio can be true for elements of the same group.
Thus, we can conclude that the statement two elements both have similar atomic radii would not support the conclusion that two elements are in the same group.
Answer:
One is polar and the other is non-polar.
Explanation:
The makeup of both water and isopropanol is different from each other due to their polar nature. Water is a polar substance means that it makes poles i.e. positive or negative while on the other hand, isopropanol is non-polar substance so due to this reason water and isopropanol make different layers. If both are polar or nonpolar substances so they will able to mix with each other.
Answer;
-All of the above
Explanation;
-Mining has a large impact on the environment because minerals are contained within the Earth. Earth must be removed in order to extract the minerals. When the minerals are close to the surface, the earth is removed, causing destruction to the shape of the land and the flora and fauna living in that area.
-The environmental problems arising due to mining activities are Land degradation, Degradation of forest and loss of biodiversity, Soil contamination, Air pollution, Surface and ground water pollution, noise and vibrations, Deterioration of natural drainage system.
Answer:
Nose, Trachea, Bronchi, Lungs (for inhalation)
Explanation:
Just reverse the answer for order of exhalation
I believe the answer is composite volcanos.
a composite volcano is formed over hundreds of years through multiple eruptions. the eruptions build the volcano layer after layer by ash, rock, etc.
hope this helps! :)
