The element selenium has the atomic number of 34 while aluminium has atomic number of 13. The electronic configuration of selenium is 2, 8,18, 6 while that of aluminium is 2, 8, 3. This means that, selenium has six electrons in its outermost shell, this allows selenium to have variety of valence numbers. Aluminium on the other hand has only three electrons in its outermost shell. Aluminium will be more ready than selenium to give away its valence electrons in order to attain the octet form. Selenium belongs to the group VIA while aluminium belongs to group IIIA. The group that an element belongs to determine the number of electron in its outermost shell.<span />
The equator only runs through South America, Africa, and Asia. So the answers would be A and E.
Acceleration is defined as the velocity of an object over a period of time.
Mathematically,
Acceleration, A = Velocity [V] /Time [T]
From the question given above, we are told that
T = 30 seconds
Initial velocity, V1 = 5
Final velocity, V2 = 2
Change in velocity, V = V1 - V2 = 5 - 2 =3
A = V / T = 3 / 30 = 0.1
Therefore A = 0.1 m/s^2.
Chloroplasts. Animal cells don’t have chloroplasts only plants
Plasmolysis is an effect of osmosis in plants. Osmosis is the net diffusion of water across a selectively permeable membrane, such as a cell membrane, from an area of higher water concentration to an area of lower water concentration.
Hemolysis is the breaking open of red blood cells and the release of hemoglobin into the surrounding fluid
Both are cause by osmosis