what happens to the radius of the atoms of an element as you go down a column of the periodic table ?

Which metal exist in liquid state and can be cut with knife ?

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

2-bromo-2-methylbutane undergoes an e1 elimination reaction in the presence of ethanol. in the next reaction only one of the possible products is represented. although the product shown is not the major product of the reaction, notice that there is more than one way it can be produced. complete the mechanism and draw the missing substances.