B

Boron

Chikamu 5 · 10.81 u

Metaloid p- block Chikamu 2 _Group 13 _Kukanganisa: at RT Wikipedia →

Boron isimbi isiri-yesimbi inodiwa mukukura kwezvirimwa uye inoshandiswa muindasitiri.

Maitiro ekushandisa

Atomic radius:10.81 u
Kuomarara2.34 g/cm³
Kutonhora Point2349.0 K
Kutonhora Point4200.0 K
KuonekaBlack-brown crystalline solid
State at Room Temp_Kukanganisa:

Chemical zvinhu

Electronegativity2.04 (Pauling)
1st Ionization Energy800.6 kJ/mol
Electronegativity:26.7 kJ/mol
Oxygen+1, +2, +3

Atomic Properties

Kuisa Kugadzirisa[He] 2s2 2p1
Atomic radius:87.0 pm
Covalent Radius84.0 pm
Van der Waals radius192.0 pm

Discovery

Yakawanikwa neJoseph Louis Gay-Lussac, Louis Jacques Thenard
Kuonekwa kwegore1808
_Panzvimbo:Paris, France
Akapihwa zita mushure meArabic 'buraq' kana Persian 'burah' zvinoreva borax

Nezve Boron

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Mashandisiro & Maapplication

Borosilicate girazi (Pyrex), fiberglass insulation, kubvisa bleach (borax), semiconductor dopant, uye neutron absorber mu nuclear reactors.

Nhoroondo yemitambo

Boron nitride inogona kuumba muviri wakaoma sedhiramu uye dzimwe nguva inozivikanwa se "graphene" yakasviba.

Isotopes

Mamwe marudzi ezvinyorwa Kuwanda Half-Life _Kuchengeta
10 0.199% - _Ndiani
11 0.801% - _Ndiani

Kuisa Kugadzirisa

[He] 2s2 2p1

Kuenzanisa

Kuenzanisa nevamwe zvinhu

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