Question

what are S-block elements explain the position of S-block elements in periodic table

Answer 1

S- block elements are the elements whose outermost orbital is s during electronic configuration. For ex, Li - 1s2 2s1.
These are located in 1st and 2nd group in periodic table.

Answer 2

Brief description of s-block elements

• Differentiating electron enters into s – orbtial.
• Contains two groups:

             I A – alkali metals (ns¹)

             II A – alkaline Earth metals (ns²)

• Highly reactive metals with low ionization enthalpy.
• Readily lose outermost electron and form +1 ion or +2 ion.
• Metallic character & reactivity increases down the group.
• Never found in free state due to high reactivity.
• Compounds of s-block elements are ionic except, (lithium & Beryllium)