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Calcium (Ca) and strontium (Sr) are expected to show chemical reactions similar to magnesium (Mg). This is because the number of valence electrons (2) is same in all these three...
1 Answers 1 viewsThe ions having same number of electrons are called isoelectronic ions. The above order is due to increasing order of effective nuclear charge.
1 Answers 2 viewsThe first ionization enthalpy of sodium is more than that of magnesium. This is primarily because of two reasons: a. The atomic size of sodium is greater than that of magnesium b....
1 Answers 1 viewsDue to high ionisation enthalpy of Be and Mg.
1 Answers 1 viewsOn heating an alkali earth metal or its salt, the electrons are excited easily to higher energy levels because of absorption of energy. When these electrons return to their ground...
1 Answers 1 viewsCation- It is the positively charged ion, e.g., Na+ which is attracted towards cathode (negative electrode) in an electric field. Anion – It is the negatively charged ion, e.g., Cl- which...
1 Answers 1 viewsNumber of moles 12 / 24 = 0.5 mol
1 Answers 1 viewsA Mg2+ ion and Mg atom differ by two electrons. 103 moles of Mg2+ and Mg atoms would differ by 103 × 2 moles of electrons Mass of 2 ×103 moles of electrons...
1 Answers 1 viewsyour the answer 8 and 8.
1 Answers 1 viewsWhen a cation of higher valence is added to an ionic solid as an impurity to it, the cation of higher valence replaces more than one cation of lower valence...
1 Answers 1 views