Tell the names of s block elements
Answers
a) s-block elements:
All of the s-block elements are unified by the fact that their valence electrons (outermost electrons) are in an s orbital. The s orbital is spherical and can be occupied by a maximum of two electrons. All of the s-block elements are metals. In general, they are shiny, silvery, good conductors of heat and electricity and lose their valence electrons easily. In fact, they lose their trademark s orbital valence electrons so easily that the s-block elements are the most reactive elements.
(b) p- block elements:
Following are the properties of p-block elements.
They are solids/liquids/gases at room temperature (Br is liquid)
They have variable oxidation states
They form acidic oxides
Generally, they form covalent compounds
Halogens form salts with alkali metals
They have high ionization potentials
They have very large electron gain enthalpies
The aqueous solutions their oxides are acidic in nature.
(c) d-block elements:
Form stable complexes
Have high melting and boiling points
Contain large charge/radius ratio
Form compounds which are often paramagnetic
Are hard and possess high densities
Form compounds with profound catalytic activity
Show variable oxidation states
Form coloured ions and compounds.
(d) f-block elements:
They are usually heavy metals
These elements have a generally higher melting and boiling point
They display a variety of oxidisation states
These elements tend to form coloured ions
They form complex compounds
Explanation:
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Answer:
hydrogen (H), lithium (Li), helium (He), sodium (Na), beryllium (Be), potassium (K), magnesium (Mg), rubidium (Rb), calcium (Ca), cesium (Cs), strontium (Sr), francium (Fr), barium (Ba), and radium (Ra).