## Question

###### Fill in the following blanks:A) What Group 2 element reacts with water only in the form ofsteam and is the active site in chlorophyll: __________.B) What is name of the Group 2 element (M) whose sulfateMSO4 is highly insoluble in water and which forms themost soluble hydroxide, M(OH)2: __________.C) Which two ions are mainly responsible for hardwater:_________.D) What Group 2 element is fabricated as a window in X-raydevices: __________.

Fill in the following blanks: A) What Group 2 element reacts with water only in the form of steam and is the active site in chlorophyll: __________. B) What is name of the Group 2 element (M) whose sulfate MSO4 is highly insoluble in water and which forms the most soluble hydroxide, M(OH)2: __________. C) Which two ions are mainly responsible for hard water:_________. D) What Group 2 element is fabricated as a window in X-ray devices: __________.

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