27 Co Cobalt 58.933 u

Cobalt

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आवर्त
4
समूह
9
ब्लॉक
d-ब्लॉक
अवस्था (STP)
Solid

Cobalt is a hard, lustrous transition metal used in superalloys and blue pigments. It is a key component of lithium-ion batteries and vitamin B12.

दिखावट: Hard, lustrous, bluish-gray

भौतिक गुण

परमाणु द्रव्यमान 58.933 u
घनत्व 8.9 g/cm³
गलनांक 1494.8 °C
क्वथनांक 2926.8 °C
STP पर अवस्था Solid
परमाणु त्रिज्या 152.0 pm

इलेक्ट्रॉनिक गुण

विद्युतऋणात्मकता 1.88
आयनीकरण ऊर्जा 760.4 eV
इलेक्ट्रॉन आत्मीयता 63.7 eV
संयोजकता इलेक्ट्रॉन 9

इलेक्ट्रॉन विन्यास

विन्यास [Ar] 3d⁷ 4s²

Electron Shell Configuration

Cobalt electron shell configuration Co 2e⁻ 8e⁻ 15e⁻ 2e⁻

Position in Periodic Table

Cobalt position in the periodic table Co

खोज

द्वारा खोजा गया: Georg Brandt
वर्ष: 1735

ब्लॉक और आवर्त

ब्लॉक

आवर्त

आवर्त सारणी

लैंथेनाइड एक्टिनाइड

Co से जुड़ी अभिक्रियाएँ

Compounds Containing Cobalt

संक्रमण धातु में और

Frequently Asked Questions

What is Cobalt?
Cobalt (Co) is a chemical element with atomic number 27. It is a solid at standard temperature and pressure, classified as a संक्रमण धातु.
What are the key properties of Cobalt?
Cobalt has an atomic mass of 58.933 u, density of 8.9 g/cm³, melting point of 1494.8°C, boiling point of 2926.8°C.
What is the electron configuration of Cobalt?
The electron configuration of Cobalt is [Ar] 3d7 4s2. It is in the d-block of the periodic table.
Who discovered Cobalt?
Cobalt was discovered by Georg Brandt in 1735.
What is the electronegativity of Cobalt?
Cobalt has an electronegativity of 1.88 on the Pauling scale.