Question

Explain doberieners traids for alkali metals halogens and alkaline earth metal​

Answer 1

Dobereiner's Triad :

The atomic mass of the middle element in triad is the average of the first two.

1. ALKALI METALS -

Li = 7

Na =7+39/2 =46/2=23

K =39

2. ALKALINE EARTH METALS -

Ca =40

Sr =40+137/2 =177/2 =88.5 ≈ 88

Ba =137

3. HALOGENS-

Cl =35.5

Br =35.5+127/2 = 162.5/2=81.25

≈ 80

I =127

Answer 2

Answer:

Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

Explanation:

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