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Why does the atomic radius of an atom decrease as you go across a period?

The atomic radius is often defined as being one half the distance between the two nuclei in a homonucleur diatomic molecule. In general, there is a decrease in atomic radius as you go across a period. Thi...

Answered by Louise E. • Chemistry tutor

2003 Views

There are two isotopes of element A. Information about the two isotopes is shown in Table 4. Table 4 Mass number of the isotope 6 7 Percentage abundance 92.5 7.5 Use the information in Table 4 to calculate the relative atomic mass of element A. Give your

92.5/100 x 6 = 5.557.5/100 x 7= 0.5255.55 + 0.525 = 6.075= 6.08 (2dp)

Answered by Natasha C. • Chemistry tutor

8395 Views

Describe the Ethnic Density Effect relating to Psychosis. What did Velling et al (2007) find relating to this, and what does it suggest about the role of socio-developmental factors in psychosis?

Ethnic minorities living within an area with few people from the same ethnic background is associated with increased psychosis incidence.Within Velling et al's (2007) study they found that immigrant group...

Answered by Matthew V. • Psychology tutor

2033 Views

What sort of stuff should I write about in my personal statement regarding work experience?

This is an area where a lot of people mess up. They have vast amounts of experience shadowing healthcare professionals and they want to write it all down and what they end up doing is listing off all the ...

Answered by Sikandar K. • Medical School Preparation tutor

1552 Views

Describe why diamond is hard and graphite is soft?

Diamond and graphite both only have carbons and have covalent bonding involved.Diamond has a giant covalent lattaice and each carbon atom is bonded to 4 other carbon atoms.Graphite on the other hand...

Answered by Muhammad Saleem R. • Chemistry tutor

74055 Views