Respuesta :
Answer:
Explanation:
Cadmium:(Cd)
Cadmium is transition metal present in group twelve. It is soft metal and properties are similar to the other group members like zinc and mercury. Its atomic number is forty eight and have two valance electrons.
Electronic configuration:
Cd₄₈ = [Kr] 4d¹⁰ 5s²
Vanadium: (V)
It is present in group five. It is malleable and ductile transition metal. Its atomic number is twenty three. Vanadium have five valance electrons.
Electronic configuration:
V₂₃ =[Ar] 3d³ 4s²
Xenon: Xe
Xenon is present in group eighteen. It is noble gas. Its outer most valance shell is complete that's why it is inert. its atomic number is fifty four. Xenon have eight valance electrons.
Electronic configuration:
Xe₅₄ = [Kr] 4d¹⁰ 5s² 5p⁶
Iodine: (I)
Iodine is present in group seventeen. Its outer most valance shell have seven electrons. Iodine is the member of halogen family. It gain one electron to complete the octet. its atomic number is fifty three.
Electronic configuration:
I₅₃ = [Kr] 4d¹⁰ 5s² 5p⁵
Potassium: (K)
Potassium is present in group one. it is alkali metal. Its atomic number is nineteen. Its valance shell has one electron. Potassium loses its one valance electron and gets stable electronic configuration.
Electronic configuration:
K₁₉ = [Ar] 4s¹
Strontium: Sr
Strontium is present in group two. it is alkaline earth metal. its atomic number is thirty eight and have two valance electrons.
Electronic configuration:
Sr₃₈ = [Kr] 5s²
By using the periodic table we classify cadmium & vanadium elements as transition metals, xenon is a noble gas element, iodine is a halogen group element and potassium & strontium are s-block elements.
What is periodic table?
Periodic table is a chart in which all chemical elements are arranged in the different groups and periods according to their electronic configuration and properties.
- Cadmium and Vanadium are transition metals and they are present in d-block where last electron goes on the (n-1)d subshell.
- Xenon is a noble gas which are having full filled valence shell of electrons and have higher stability.
- Iodine is a halogen group element and p-block element, and electronic configuration is represented as ns²np⁵.
- Potassium is an element from alkali metal group from s-block group and electronic configuration is represented as ns¹.
- Strontium is an element from alkaline earth metal group from s-block group and electronic configuration is represented as ns².
Hence, cadmium & vanadium are transition metals, xenon is noble gas atom, iodine is a halogen group element and potassium & strontium are s-block elements.
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