W... ನೊಂದಿಗೆ ಪ್ರತಿಕ್ರಿಯಾತ್ಮಕತೆಯ ಇಳಿಕೆಯ ಕ್ರಮದಲ್ಲಿ Ca, Mg ಮತ್ತು Fe ಲೋಹಗಳನ್ನು ಜೋಡಿಸಲು ಚಟುವಟಿಕೆಯನ್ನು ರಚಿಸಿ

Excess of Mn in soil leads to deficiency of Ca, Mg and Fe. Justify.

Explain the following question (based on ionisation energy): (a) Why IE_(1) of N is higher than that of O atom ? (b) Why IE_(1) of Mg is higher than that of Al atom? (c ) Why IE_(1) of C is greater than that of B atom whereas IE_(2) is reverse ? (d) In general, IE increases along the period (rarr) . Explain why the IE_(2) of Cr is higher than that of Mn (Manganese)? (e) The IE_(1) and IE_(2) of K are 420 and 3050 kJ mol^(-1) respectively and those of Ca are 560 and 1140 kJ mol^(-1) respectively. Compare their values and comment on the differences. (f) The IE of Li , Be and C are 5.5, 9.3 and 11.3 eV . What would be the case and explain. i. K, Ca,Se , ii. N,O,F iii. K^(o+), Ar,Cl^(ɵ) , iv Fe, Fe^(2+), Fe^(3+) v. C,N,O , vi. Cu,Ag,Au vii. K, Rb, Cs , viii Be, B, C ix. Na, Mg, Al (h) Explain why Fe^(2+) is more easily oxidised to Fe^(3+) than Mn^(2+) to Mn^(3+) . (i) Explain whether IE_(1) of two isotopes of same element would be same or different. (j) What are the factors on which IE of main group elements tends to decrease douwn the group (darr) .

A farmer adds/supplies Na, Ca, Mg and Fe regularly to his field and yet he observes that the plants show deficiency of Ca, Mg and Fe. Give a valid reason and suggest a way to help the farmer improve the growth of plants.

In which one of the following pairs, the two species are both isoelectronic and isotopic ? (At. Numbers : Ca = 20, Ar = 18, K = 19, Mg = 12, Fe = 26, Na = 11)