Question

What is the total number of atoms present in 5Na3PO4

Select one:
30
40
10
50

Answer 1

see solution you will get answer very simply

Answer 2

40

because

The compound is Na3PO4

so Number of sodium atoms(Na) = 3

Number of phosphorus atoms(P) = 1

number of oxygen atoms (O) = 4

so , total number of atoms in Na3PO4 = (3+1+4) = 8

Now , there are 5 atoms of Na3PO4

so total number of atoms =5*8 = 40