Table of Contents
Overview of Topic- General Characteristics of the Compounds of the Alkali Metals
There are several elements in our environment with various properties and purposes dependent on those properties. Properties are vital when using these elements, hence there should be a table to organize them. This table is referred to as a periodic table, and it was constructed by combining the work of several scientists. Alkali metals are the first category of elements. Lithium, sodium, potassium, rubidium, Caesium, and Francium are all members of this group. Apart from lithium, all other elements have chemical and physical properties that are identical.
Alkali Metal Characteristics
- Atomic Radii: As the atomic number grows, the atomic radii of alkali metals increase down the group, resulting in the addition of additional energy shells. Moving from beryllium to radium, the size of atoms rises due to the inclusion of energy shells.
Be< Mg< Ca< Sr< Ba< Ra
- Boiling Point: The boiling point of alkali metals is lower than that of alkaline earth metals, and it falls as the group progresses; it follows a trend that runs counter to atomic size, as electrons in smaller atoms are more difficult to excite by heat energy than electrons in bigger atoms.
Be> Mg> Ca> Sr> Ba> Ra
- Standard Potential: The standard potential of alkaline earth metals follows the same trend as atomic size, which implies that as the atomic size grows, the negative standard potential of ions decreases.
Be> Mg> Ca> Sr> Ba> Ra
Alkali Metal Physical Properties
- Heat energy can easily ionize alkali metals.
- These metals have a glossy appearance.
- Because these elements are flexible, they can be pounded into thin sheets.
- Alkali metals have a very high heat conductivity.
- Because these parts are delicate, they can be readily sliced.
- Because of their low density, alkali metals float on water.
- These elements have a proclivity for exhibiting exothermic reactions.
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FAQs (Frequently Asked Questions)
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Yes, you can easily score full marks in Class 11 Chemistry. All you need to do to score full marks in Maths is a frequent practice. All of the concepts should be clear in this subject since many questions are expected in the board examination from this chapter. This will help you make your confidence up and well versed with the chapter and can score full marks in the exam. You should also refer to the NCERT Solutions of this chapter.
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