How do you determine charge of element from periodic table?

Answer 1

elements in group Ia - IVa have an oxidation number equal to the positive number of the group.example oxidation of K = +1, K is in group 1. elements in group Va - VIIa have an oxidation number equal to the group number minus 8. for example oxidation of O is -2, group number 6a minus 8 equals -2. as for the rest of the elements in groups 1b to 8b i have no idea and am searching for the answer.

Answer 2

In the Periodic Table, an element's atomic number indicates the number of protons in its nucleus. If the number of electrons in its orbit is known, its ionic charge can be easily determined by subtracting the number of electrons from the atomic number.

Answer 3

Read the numbers at the top of the columns.

1A = 1 valance electron of the alkali metals.

4A = 4 valance electrons of the carbon family.

Remember, transition metals have varying oxidation states. The can donate various numbers of electrons though the top numbers generally give an accurate valance number.

Answer 4

The charge of an element can be determined by looking at its position on the periodic table. Elements in group 1A typically have a +1 charge, group 2A have a +2 charge, group 7A have a -1 charge, and group 6A have a -2 charge. Transition metals can have variable charges based on their oxidation states.

Answer 5

The number of electrons in each atom of an element is the same as the atomic number shown in the periodic table entry for the element.

Answer 6

by knowing the number of electrons in the last shell for metals, for non metals it is the number of electrons it need to attend the octet state