Answer: The correct option is A,
--> a.) Transition metals have partially filled d subshells.
Explanation:
Transition elements are all metals of economic importance. They are found in the d- lock of the periodic table between group 2 and 3. They occupy three rows, with ten elements in each row. The term 'transition metals' refers only to an element which has PARTIALLY filled d orbitals. Typical example of transition metals include iron (Fe).
They have partially filled 3d orbitals which are responsible for the special properties of the metals. These include:
--> Physical properties: the transition metals have high boiling and melting points. They are hard, dense and lustrous. They are also good conductors of heat and electricity.
--> Chemical reactivity: In the s- block and p-block, the chemical properties of the elements in the same period vary, often quite markedly, from left to right. This does not happen with the transition metals because electrons are added progressively to the inner d-orbitals.
--> Variable oxidation states: they have variable oxidation states because 3d electrons are available for bond formation.
The correct answer among the choices given is option D. Benzene is the simplest aromatic compound. It is the basic unit or part of an aromatic compound. It has a configuration of six carbon atoms. Aromatic compounds can be monocyclic consisting of only one benzene or polycylclic consisting of many benzene rings.
Answer:
37.1mL
Explanation:
This is a simple dilution problem where you utilize the equation:
(C=Concentration, V=Volume)
C1V1=C2V2
10.6(y)=0.715x0.550 (Y is unknown because we are trying to find how much of the original solution we need to dilute to make the final solution)
The solve for y and you get
y= 0.0317 L but this is in L and we want mL so multiply by 1000 you get
y= 37.1mL
<span>Anions and cations attract one another by means of.. the forces of attraction that hold oppositely charged ions together in ionic compounds
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