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Name the element described in each of the following:

musickatia [10]

Period 4 transition element that forms 2+ ion with a half‐filled d sub level is Manganese (Mn)

What is the half-filled d sub-level?

Transition metals are an interesting and challenging group of elements. They have perplexing patterns of electron distribution that don’t always follow the electron-filling rules. Predicting how they will form ions is also not always obvious.

Transition metals belong to the d block, meaning that the d sublevel of electrons is in the process of being filled with up to ten electrons. Many transition metals cannot lose enough electrons to attain a noble-gas electron configuration. In addition, the majority of transition metals are capable of adopting ions with different charges. Iron, which forms either the Fe2+ or Fe3+ ions, loses electrons as shown below.

Some transition metals that have relatively few d electrons may attain a noble-gas electron configuration. Scandium is an example. Others may attain configurations with a full d sublevel, such as zinc and copper.

to know more about half-filled d sub-level

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6 0

2 years ago

Which reaction demonstrates bonds breaking?

Paul [167]

The first one im pretty sure

5 0

3 years ago

Read 2 more answers

Can anybody help me pleaseee

valina [46]

K2O + CaBr2 ---> CaO + 2 KBr

Unable to read second question properly sorry

6 0

3 years ago

Why isn't pure iron suitable for a replacement hip joint

Furkat [3]

Because iron is an element meaning that it only contains iron atoms, pure iron is easily oxidized meaning that oxygen readily reacts with the surface of the iron which causes it to rust. Therefore, since the iron joint replacement is surrounded by wet tissues would it would rust and flake off which could cause serious problems.

3 0

4 years ago

As the two parental (template) DNA strands separate at a replication fork, each of the strands is separately copied by a DNA pol

Lapatulllka [165]

Answer:

Synthesis of leading strand:

daughter strand elongate towards replication fork

only one primer is needed

made continuously

Synthesis of the lagging strand:

multiple primers needed

daughter strand elongates away from replication fork

made in segments

Synthesis of both:

synthesized in 5' to 3'

Explanation:

The replication of DNA involves the unwinding of the double helix structure by the helicase enzyme after which RNA primer binds to form a bubble known as the replication fork.

DNA can only be replicated in the 5' to 3' direction because the polymerase that is responsible for the elongation of new strands can only add nucleotides in the 5' to 3' direction.

Hence, the leading strand is replicated continuously in this direction while the lagging strand is replicated discontinuously or fragments known as the okazaki fragments. The discontinuous replication of the lagging strand therefore requires different primers biding at multiple sites on the DNA strand.

Because of the nature of replication of the lagging strand, the elongation of the fragments moves away from the replication fork while that of the leading strand moves towards the replication fork.

3 0

3 years ago