Arrange the following compounds in the increasing order of total number of atoms.
(A) Aluminium phosphate
(B) Ammonium carbonate
(C) Magnesium sulphide
(D) Sodium bisulphate
(E) Silver nitrate

Options

A. BEADC
B. CDAEB
C. CEADB
D. BDAEC

Explanation

To solve the problem of arranging the compounds in increasing order of total number of atoms, we need to first determine the total number of atoms in each compound. Let's analyze each compound step by step.

### Step 1: Count the atoms in Aluminium Phosphate (AlPO₄)
- Aluminium (Al): 1 atom
- Phosphorus (P): 1 atom
- Oxygen (O): 4 atoms

**Total atoms in AlPO₄ = 1 + 1 + 4 = 6 atoms**

### Step 2: Count the atoms in Ammonium Carbonate (NH₄₂CO₃)
- Nitrogen (N): 2 atoms
- Hydrogen (H): 8 atoms (4 from NH₄ and 4 from the other NH₄)
- Carbon (C): 1 atom
- Oxygen (O): 3 atoms

**Total atoms in NH₄₂CO₃ = 2 + 8 + 1 + 3 = 14 atoms**

### Step 3: Count the atoms in Magnesium Sulphide (MgS)
- Magnesium (Mg): 1 atom
- Sulphur (S): 1 atom

**Total atoms in MgS = 1 + 1 = 2 atoms**

### Step 4: Count the atoms in Sodium Bisulphate (NaHSO₄)
- Sodium (Na): 1 atom
- Hydrogen (H): 1 atom
- Sulphur (S): 1 atom
- Oxygen (O): 4 atoms

**Total atoms in NaHSO₄ = 1 + 1 + 1 + 4 = 7 atoms**

### Step 5: Count the atoms in Silver Nitrate (AgNO₃)
- Silver (Ag): 1 atom
- Nitrogen (N): 1 atom
- Oxygen (O): 3 atoms

**Total atoms in AgNO₃ = 1 + 1 + 3 = 5 atoms**

### Summary of Total Atoms
- Aluminium Phosphate (AlPO₄): 6 atoms
- Ammonium Carbonate (NH₄₂CO₃): 14 atoms
- Magnesium Sulphide (MgS): 2 atoms
- Sodium Bisulphate (NaHSO₄): 7 atoms
- Silver Nitrate (AgNO₃): 5 atoms

### Step 6: Arrange in Increasing Order
Now, we can arrange these compounds in increasing order of total number of atoms:
1. Magnesium Sulphide (MgS) - 2 atoms
2. Silver Nitrate (AgNO₃) - 5 atoms
3. Aluminium Phosphate (AlPO₄) - 6 atoms
4. Sodium Bisulphate (NaHSO₄) - 7 atoms
5. Ammonium Carbonate (NH₄₂CO₃) - 14 atoms

### Final Answer
The increasing order of the compounds based on the total number of atoms is:
**C (MgS) < E (AgNO₃) < A (AlPO₄) < D (NaHSO₄) < B (NH₄₂CO₃)**