Yes a red blood cell placed in a sline solution shrinks because of the process of osmosis.
Ca +2
At -1
In +3
Sr +2
Ra +2
Fr +1
Ba +2
As -3
Answer is valence electron, they all have total of 2 valence electron.
remember group number = valence electron
<span>The atomic mass for copper is 63.546 amu. Copper is typically reddish orange in color and has a melting point of 1981.4 degrees Fahrenheit. It is classified as a transition metal and has an atomic number of 29.</span>
Maybe it's [Acid] and [H+ ions]
