NA MA 54 Ar Which metal has valency 3 among above? b. Which metal is more active between 'O' and 'S'? why? c. What change in atomic size is found when we move from sodium to rightward and whe effect does it cause on the reactivity of elements? 23. Sketch a neat diagram of neuron and label the parts, which carry impulse to the cell body or exton and away from the cyton. Give an example showing interrelation betweer nervous system and glandular system. 24. proper implementation of Kyoto protocal would help to cope the globel warming9, how​