Lanthanum

Lanthanum ek chemical element hae, jiske chemical symbol La, atomic number 57 aur atomic mass 138.9 hae. Periodic table me ii uu chemical elements ke group me hae jiske Lanthanides bolaa jaae hae.

v • d • e Periodic table
H																															He
Li	Be																									B	C	N	O	F	Ne
Na	Mg																									Al	Si	P	S	Cl	Ar
K	Ca	Sc															Ti	V	Cr	Mn	Fe	Co	Ni	Cu	Zn	Ga	Ge	As	Se	Br	Kr
Rb	Sr	Y															Zr	Nb	Mo	Tc	Ru	Rh	Pd	Ag	Cd	In	Sn	Sb	Te	I	Xe
Cs	Ba	La	Ce	Pr	Nd	Pm	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	Hf	Ta	W	Re	Os	Ir	Pt	Au	Hg	Tl	Pb	Bi	Po	At	Rn
Fr	Ra	Ac	Th	Pa	U	Np	Pu	Am	Cm	Bk	Cf	Es	Fm	Md	No	Lr	Rf	Db	Sg	Bh	Hs	Mt	Ds	Rg	Cn	Nh	Fl	Mc	Lv	Ts	Og
Alkali metals Alkaline earth metals Lanthanide Actinoids Transition metals Other metals Metalloids Other nonmetals Halogens Noble gases

Atomic Structure
Symbol	La
Atomic Number	57
Atomic Mass	1389g/mol
Periodic Table
Group	3
Row / Period	6
Element Category	Transition dhaatu
Chhapa
Lanthanum ke electron shell