❤P block elements❤
⚡Let's learn some Concepts⚡
๐ฅWhat is the difference between s-block and p-block elements?
๐ CONCEPT :-
๐They are grouped as s-block or p-block according to the position of valence electrons in orbitals.
๐The main difference between s and p block elements is that the valence electrons of the s-block elements are
in the s-orbital whereas the valence electrons of the p-block elements are
in the p-orbital.
๐ฅBehaviour of the third period of p-block elements?
๐ CONCEPT :-
๐The third period elements of p-groups with the electronic configuration 3s2 ,3pn have the vacant 3d orbitals lying between the 3p and the 4s levels of energy.
๐Using these d-orbitals the third period elements can expand their co-valence above four.
๐ฅHow does the presence of d-orbitals affect the properties of heavier metals?
๐ CONCEPT :-
๐The presence of d-orbitals influences the chemistry of the heavier elements in these ways:
1⃣ The combined effect of size and availability of d orbitals considerably influences the ability of these elements to form ฯฯ bonds.
2⃣ The first member of a group differs from the heavier members in its ability to form pฯ−pฯpฯ-pฯ multiple bonds to itself.
๐ฅWhy heavier metals show reluctance for pฯ-pฯ bonding ?
๐ CONCEPT
๐The heavier elements do form ฯฯ bond but this involves d orbitals (dฯ−pฯ or dฯ−dฯ)(dฯ-pฯ or dฯ-dฯ) type bonding as the d orbitals are of higher energy than the p orbitals, they contribute less to the overall stability of molecules than does pฯ−pฯpฯ-pฯ bonding of the second row elements.
๐ฅWhat are the properties of the Boron group of elements?
๐ CONCEPT :-
1⃣ Boron is a typical non-metal, aluminium is a metal but shows many chemical similarities to boron, and gallium, indium, thallium and nihonium are almost exclusively metallic in character.
2⃣ Boron is a fairly rare element, mainly occurs as orthoboric acid, (H3BO3), borax, Na2B4O7·10H2O, and kernite, Na2B4O7·4H2O
3⃣ The abundance of boron in earth crust is less than 0.0001% by mass.
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