Metalloids elements: B, Si,
Ge, As, Sb, Te, Po, At,
Mnemonic: Baba (B), Singh (Si),
Gee (Ge), Asali (As), Sabun (Sb), Tel (Te),
Potkar (Po) kar aate (At) hai.
" Baba
Singh
Gee
Asali
Sabun
Tel
Potakar
aAte
hai"
Related Questions:
Metalloids elements: B, Si,
Ge, As, Sb, Te, Po, At,
Mnemonic: Baba (B), Singh (Si),
Gee (Ge), Asali (As), Sabun (Sb), Tel (Te),
Potkar (Po) kar aate (At) hai.
" Baba
Singh
Gee
Asali
Sabun
Tel
Potakar
aAte
hai"
Related Questions:
Amphoteric
metals are those metals which oxides behave as acid with bases as well as
behave as base with acids
Amphoteric metal: Al, Be, Zn, Sn, Pb
Mnemonic: Ali (Al) Be (Be) ke Zane (Zn)
se Sanna (Sn) hui pagal (Pb):
"Ali be ke Jane se Sanna hui pagal"
Related Questions:
1.
Lowest electronegativity: Cs
2. Highest electronegativity: F
3. Highest ionisation potential: He
4. Lowest ionisation potential: Cs
5. Lowest electron affinity: Noble gases
6. Highest electron affinity: Chlorine
7. Least electropositive element: F
8. Lowest m. pt. metal: Hg
9. Highest m. pt. and b. pt. metal: W (Tungsten)
10. Lowest m. pt. and b. pt. non metal : He
11. Notorious element: Hydrogen
12. Lightest element: Hydrogen
13. Smallest atomic size : H
14. Largest atomic size: Cs
15. Largest anionic size: I–
16. Smallest cation: H+
17. Most electropositive element: Cs
18. Element with electronegativity
next to Fluorine : Oxygen
19. Group containing maximum no.
of gaseous elements in periodic table : Zero group
20. Total number of gaseous elements
in periodic table: 11 (H, N, O, F, Cl, He, Ne,Ar, Kr, Xe, Rn)
21. Total number of liquid elements in
periodic table: 6 (Ga, Br, Cs, Hg, Fr, Uub)
22. Smallest anion: F–
23. Liquid element of radioactive nature : Fr
24. Total number of radioactive elements in
periodic table: 25
25. Volatile d-block elements: Zn, Cd, Hg,Uub
26. Element containing no neutron : H
27. Most abundant element on earth : Oxygen
28. Rarest element on earth: At (astatine)
29. Most abundant metal on earth : Al
30. Element having maximum tendency
for catenation; C
31. Non metal having . pt., b. pt. :
Carbon (diamond)
32. Metals showing highest oxidation number: Os (+8)
33. Most electrovalent compound: CsF
34. Most stable carbonate: Cs2CO3
35. Strongest alkali: CsOH
36. Strongest basic oxide: Cs2O
37. Best electricity conductor among metals: Ag
38. Best electricity conductor among non metals: graphite
39. Most poisonous element: Pu(Plutonium)
40. Liquid non metals: Br
41. Element kept in water: Phosphorous
42. Elements kept in kerosene: IA group element (except Li)
43. Elements sublime on heating: I2
44. Noble metals: Au, Pt. etc.
45. Amphoteric metal: Be, Zn,Al, Sn, Pb
46. Amphoteric nonmetal: Si
47. Metalloids elements: B, Si,As, Te,At, Ge, Sb
48. Nonmetals having metallic lusture : Graphite, Iodine
49. Heaviest naturally occurring element: Uranium
50. Poorest conductor of electricity: Diamond
51. Hardest naturally occurring element: Diamond
52. Lightest solid metal: Li
53. Amphoteric oxides: BeO, Al2O3, ZnO, PbO, PbO2,
SnO, SnO2,
Sb2O3, As2O3 etc.
54. Neutral oxides of nonmetals: NO, CO, H2O, N2O
55. Dry bleacher: H2O2
56. Dry ice: Solid CO2
57. First man made element: Tc 43 (Technicium)
58. Smallest period: Ist (2 elements)
59. Largest period in periodic table: 6th (32 elements)
60. Largest group in periodic table: IIIB(32 elements)
61. Most abundant d-block metal: Fe
62. Most abundant s-block metal: Ca
63. Highest density (Metals) : Os, Ir
64. Highest density (Non Metals) : Boron
65. Most abundant gas in atmosphere: Nitrogen
66. Most abundant element in the universe: Hydrogen
Related Questions:
Related Questions:
Why
Ga has small size than Al exceptionally
Why
aqueous solution of borax reacts with two moles of acids ?
What
is structure of solid Ortho Boric acid ?
What
is the structure of trimetaboric acid and trimetaborate ion?
Why
Borazine is more reactive than benzene towards Electrophic Aromatic
substitution reactions ?
Why
Borazine (B3N3H6) is also known as inorganic benzene ?.
Why
B-F bond length in BF3 is shorter (130 pm) than B-F bond Iength in BF4- (143
pm)?. Explain.
Why
B-F do not exist as dimer?. Explain.
Although
anhydrous aluminium chloride is covalent but its aqueous solution is ionic in
nature. Why?
Why
Boric acid become strong acid in the presence of cis 1,2-diol or 1,3-diol ?
Four-center
two-electron bond (4C-2e Bond): Structure of AlCl3:
What
is the molecular formula of Borax ?
What
is the difference between the structure of AlCl3 and diborane?
Titration
of Borax: Tincal : Suhaga :
Structure
of Borax: Tincal or Suhaga:
DIBORANE-HYDRIDE
OF BORONE-(B2H6):
CHEMICAL
PROPERTIES OF DIBORANE:
STRUCTURE
OF BORAZINE OR BORAZOLE: