Answer:
The elements in same period have same principle quantum number or energy shell.
The elements in same group shows similar chemical and properties.
Explanation:
Inn group:
The elements in same group i.e present in vertical column shows similar chemical properties.
The elements in same group having same number of valance electrons. while in chemical reaction bonds are break and formed and valance electrons are involved. That's why elements in same group having same number of valance electrons and shows similar chemical properties.
In period:
While as we move from left to right the number of valance electron increase by one in every element. But the electron is added in same shell which means that their physical and chemical properties are different but principal quantum number is same.
Answer:
it has many layers
the inner core is solid
the core is iron
its very hot
the presusre increases as you move closer to the core
Answer:
No empty orbitals but five unpaired electrons.
Explanation:
Hello there!
In this case, when going over the empty orbitals in valence energy levels, it is required to develop the electron configuration in order to appropriately describe the element. In such a way, for the element whose atomic number is 25 because it equals the number of electrons, we obtain:
It means that the d orbital is half filled which means that it does not have any empty orbital wherein two electrons are contained per orbital. Moreover, we can find 5 unpaired electrons according to:
↑ ↑ ↑ ↑ ↑
Which is the orbital notation.
Best regards!
Answer:
I don't understand please speak English so I can help
Answer:
I'm pretty sure it is A but, sorry if I'm wrong!!!
