A sodium ion is noted as Na+ because it has an overall charge of __________.ANSWERIt cannot be determined as written.+1+2-1

A sodium ion is noted as Na+ because it has an overall charge of __________.ANSWERIt cannot be determined as written.+1+2-1

Calcium is element number 20 on the Periodic Table. As an ion it has a +2 charge. How many electrons does a calcium ion have?A20B4C22D18

For an ion, the oxidation number is __.Multiple choice question.one less than the charge on the ionalways negativezerothe same as the charge on the ion

Francium, which is in the same chemical family as sodium, will carry what type of charge?Multiple choice question.positiveneutralnegativenegative and positive

Sodium (Na) has an atomic number of 11.  Its electron configuration (by shells) is therefore:A  2, 8, 1B  1, 2, 8C  2, 2, 7D  2, 7, 2*1 pointABCD