Question

the neutral form of an element consists of 12 electrons in its atom
1.name element'E ' and in which period and group E be placed
2. how many electrons it need to loose or gain to achieve noble gas configuration
3. what will be the nature of oxide E

Answer 1

magnesium is the element having 12 electron and in 3rd period and 1st group placed it
it's valence electrons is two magnesium lose 2 electron
going to left to right nature of oxide decrease and going to up to down nature of oxide constant