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Explain why the ionisation energies tend to increase across a period

As you go across a period, the next atom will have 1 more proton in its nucleus than the one before. Therefore, the nucleus of each atom will have an increasingly positive charge, meaning a stronger nuclear ...
MS
Answered by Megan S. • Chemistry tutor
2746 Views

Describe the process of eukaryotic DNA replication

DNA helicase unzips and unwinds the DNA double helix by breaking hydrogen bonds between complementary base pairs. This exposes the bases on two strands creating template strands. Free floating nucleotides ar...
LB
Answered by Louis B. • Biology tutor
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What is the value of x from (x+2)^2=4

(x+2)^2=4=>x+2=2+>x=0 or x+2=-2=>x=-4
AB
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An electron of mass 9.11x10^(-31) is fired from an electron gun at 7x10^6 m/s. What size object will the electron need to interact with in order to diffract?

Momentum of electron=mv=6.377x10^ -24 kg m/s λ=h/mv=6.63x10 -34 /6.377x10 -24 =1.039...x10 -10 = 1x10 -10 m
JG
Answered by Jozefina G. • Physics tutor
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What factors affect ionisation energy and how does each of them affect it?

atomic radius: the larger the atomic radius, the smaller the attraction of the outer shell electrons to the nucleus so the ionisation energy is lower reduced as atomic radius increases. 2. nuclear charge: th...
HO
Answered by Harriet O. • Chemistry tutor
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