The most reactive elements in periodic table are K, Na, Ca, Mg, Al, C, Zn, Fe, Sn, Pb, H, Cu, Ag, Au and Pt. These are given in descending order of reactivity.
magnesium is at a higher position in the activity series than silver.So it displaces silver from its compound forming MgO which is easily removed by washing.The activity series is :- K , Na , Ca , Mg , Al , Zn , Fe , Pb , [H] , Cu , Hg , Ag , Pt , Au
K. Cu. Cl
Sachs solution is a nutrient medium which uses the compounds of Ca, Fe, Na, Mg, K. We can determine how the deficiency of these cations affects the growth of various plants.
These elements (1 to 30) are: H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn. The element with the atomic number 30 is zinc (Zn).
(Na, K, Ca, Mg, P, Fe, Cu, Zn, Mn and B
N, P, K, Fe, Mg, Zn, S, Cu etc.
K
These symbols are the standardized symbols for chemical elements: some examples are Na, K, Li, Ca, Mg, Th, Cu, Fe etc.
Macronutrients are proteins, fats, carbohydrates; micronutrients are Na, Ca, P, K, Fe, Cu, Ni, Se, Mg, N, etc.
H2O, Na, Ca, Cu, Fe and K.
H2O, Na, Ca, Cu, Fe and K.
H2O, Na, Ca, Cu, Fe and K.
H2O, Na, Ca, Cu, Fe and K.
H2O, Na, Ca, Cu, Fe and K.
Schists can have Mn and Fe, limestone has Ca and Mg in it while granitic rocks have K, Ca, Mg and fe.
Examples: - Sr, Li as carbonates - Na, Cs, K, Rb as nitrates - Ca, Ba, Cu as chlorides - powdered metals as Ti, Al, Be, Mg, Fe etc.