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Explain the trend in atomic radii from Lithium to Fluorine?

As we go from Li to F, atomic radius of the atoms will DECREASE. This is due to increased nuclear charge (number of protons within each atom). Although the number of electrons also increases, each additional...
AH
42998 Views

What speed do satellites orbit at?

The key point to recognise here is that an object undergoing a circular orbit around the Earth is undergoing circular motion. Circular motion is caused by a centripetal force (acting towards the centre of th...
RM
Answered by Ryan M. • Physics tutor
4376 Views

What was the Cursus Honorum?

The Cursus Honorum The Cursus Honorum or “course of offices” was the “greasy pole” of the Roman political world. It was designed for men of senatorial rank. It spelled out the sequential order of offices tha...
GP
30729 Views

Why is Pluto not a planet any more?

When astronomers discovered Pluto in 1930, they were excited to announce it as the 9th planet in the solar system. The problem is, back then we didn't know that Pluto is just one of many objects floating in ...
RM
Answered by Ryan M. • Science tutor
6120 Views

Where does the quadratic equation come from?

This is a quick derivation of the quadratic formula for an GCSE Maths students looking to stretch themselves a little and go for that A*! If we have a general quadratic equation: ax 2 +bx+c=0 (eq1) You will ...
RM
Answered by Ryan M. • Maths tutor
5343 Views