Which alkaline earth metal gives a characteristic brick red color in a flame test, and why?
Strontium, due to the formation of a stable oxide.
Barium, due to its high ionization energy.
Calcium, due to electronic transitions in the excited state.
Magnesium, due to its small size.
Related Questions
The electronegativity difference between the elements in a hydride influences its ionic character. Considering the trend in electronegativity within Group 2, predict the order of decreasing ionic character for the following hydrides: .
Calcium hydride on hydrolysis gives:
only
only
Why is a suitable cofactor for ATP-utilizing enzymes in phosphate transfer reactions, unlike other alkaline earth metals like ?
Larger ionic radius
Smaller ionic radius
Higher charge density
Optimal ionic radius and charge density
Metals belonging to the same group in the periodic table are:
Magnesium and sodium
Magnesium and copper
Magnesium and barium
Magnesium and potassium
Superphosphate of lime is a mixture of:
Primary calcium phosphate and Epsom
Primary magnesium phosphate and Epsom
Primary magnesium phosphate and gypsum
Primary calcium phosphate and gypsum
Beryllium hydride is obtained by:
Heating Be in atmosphere of
The action of with
The action of Be with
None of the above
Superphosphate of lime is a mixture of:
Primary calcium phosphate and Epsom
Primary magnesium phosphate and Epsom
Primary magnesium phosphate and gypsum
Primary calcium phosphate and gypsum
Beryllium chloride () exhibits covalent character. Which of the following explains this observation?
Large size of
Low ionization energy of beryllium
High polarizing power of
Low electronegativity of chlorine
Slaked lime is:
Which of the following will liberate hydrogen by its reaction with hydrochloric acid?
Copper
Phosphorus
Mercury
Magnesium
