Question

name the main metal present in- (a)haemoglobin
(b)chalk
(c)chlorophyll
(d)chocolate wrappers​

Answer 1

Haemoglobin - IronChalk - CalciumChlorophyll - MagnesiumChocolate wrappers - Aluminium

Explanation: Metals are the elements which loose their electrons easily.

Main element present in the Haemoglobin is Iron. It is a tetramer of [Fe-heme] complex.Main element present in chalk is Calcium. The composition of chalk is CaCO_3CaCO3​Main element present in Chlorophyll is magnesium. The central metal atom is Magnesium and organic molecule around it is known as porphyrin.Main element in Chocolate wrappers is Aluminium. the wrapper is mainly the aluminium foil.

Answer 2

a) iron

b) calcium carbonate

c) ..