KMn Ou -> Kg Mn On + MnO₂ + O₂

Idid the calculation and i get 875,000,000 which can be written as 8.75 x 10^6?

C) electrons encircling a nucleus with neutrons and protons

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts