Group 1 a elements have similar properties because they
a. have the same number of electrons
b. have the same number of electron shells
c. need the same number of electrons to fill their valence shells
d. have the same number of valence electrons
more than one answer

C. Need the same number of electrons to fill their valence shells

D. Have the same number of valence electrons

Step-by-step explanation:

Yes I know I answered a year late, the reason why I answered this is because so other people that have this question would know both of the correct choices. If you want to you could give this brainlest, you don't have to if you don't want. To be honest I don't really care if you do or not.

.24

step-by-step explanation:

the probability is   .24

the first player had the highest probability of getting a silver marble

the game could be made fair by adding back the marble that was drawn after each draw