Question

arrange the elements Na,Cl ,mg and P in decreasing order of their atomic size​

Answer 1

$HEYA!!$

From moving left to right size of atom increases.

Na,Mg,Cl,P

___________

Answer 2

Hey mate...

✌☺

▶The decreasing order is

➡Na , Mg , P , Cl

▶Here is the Explanation...

✔As, number of electrons increases in the outermost shell then the atomic soze get shrinks...

As,
➡Na = 11 = 2, 8, 1
➡P = 15 = 2, 8, 5
➡Cl = 17 = 2, 8, 7
➡Mg = 12 = 2, 8, 2


▶I hope you can understand..

Thanks❤