I would assume its A, considering water, while able to dissolve many things, can't dissolve everything
The atom with the strongest attraction for electrons in bond formation is the atom with the most positive charge since an electron has a negative charge. Unlike attracts like. Among these, Sr and ba has 2+ and has the greatest charge but ba has a stronger electron affinity (decreasing from top to bottom). answer is barium.
You can use a graduated cylinder.
Answer:
atomic number of Be =4
electronic configuration :1s²2s²
but for Be2+ atomic number = 4-2 =2
electronic configuration : 1s²
