Question

To whom is the correspondence with local organisations addressed​

Answer 1

Explanation:

Dobereiner’s Triads: This classification is based on the atomic mass. According to this, when elements are arranged in order of increasing atomic masses, groups of three elements, having similar properties are obtained. The atomic mass of middle element of the triad being nearly equal to the average of the atomic masses of the other two elements

Answer 2

Answer:

Correspondence is addressed to the head or officer of the concerned department of the local organisations.