The Answer could be 5/12 since there’s 5 Blue Balls out of random other colors. To Find Probability, You must take the “if a ball is picked from the bag at random, what is the probability” and combine it with the “Blue Ball”
For Example:
Tom and Henry have a Bag filled with 8 Red Blocks, 2 Orange Blocks, and 1 Blue Block. If a Block is Pulled Randomly, What is the Probability if it is a Orange Block(s)?
Because of the relative stability, these atoms often form covalent bonds rather than ionic bonds that need a charge. One example is Carbon. It has 4 valence electrons, so it can make a 4+ or a 4- charge.