v

T

C

V

�� �� �� ��

R

V

V

P

V

R

2

4MnO

�

2

3 4MnO

� 1

3

1

3 4MnO

� 2

3

1

3

2

3

2

3

1

3

3

4VO

�

2

6O

� 2

7O

�

1

a x�

4O

�

4O

�

2

4O

�

4O

�

2

2O

�

3NH

�

�

2 2x yd

� 2zd

�

A solu t i on of sodium m et al in l i qu id am m onia gener at es [N a(N H

1

2

7

2