The answer is B particles combine into a large amount of engery.
The coordination number of cobalt in the complex is 6.
What is coordination compound?
The number of ligands attach to the central metal atom or ion in coordination sphere is coordination number.
In given complex 5 NH3 and 1 chlorine is attached in coordination sphere, so coordination number is 6.
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Answer:
a. K⁺
b. Se²⁻
Explanation:
Isoelectronic species are those that have the same number of electrons.
a.
Ar has 18 electrons. K has 19 electrons, so when it loses 1 electron to form K⁺, it is isoelectronic with Ar.
b.
Kr has 36 electrons. Se has 34 electrons, so when it gains 2 electrons to form Se²⁻, it is isoelectronic with Kr.
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