Compared to the charge and mass of a proton an electron has......
A proton has approximately the same mass as..........
The refractory period makes the cell rest. In this period, the cell becomes able to depolarize again by collecting ions.
<u><em>Answer</em></u>
<u><em>Explanation</em></u>
- In periodic table, the elements have almost same properties are present in the same group. As Mg and Sr are present in group II-A, so both behave most likely to each other due to having same valence shell electrons as well.
- Si and Sn are present in group IV-A which have same behavior but different one from Mg due to different groups.
- S is present in group VI-A which show different properties from all others one especially from Mg.
Answer:
Thermal expansion is the tendency of matter to change its shape, area, and volume in response to a change in temperature.
Explanation:
