(c) Draw the structures of the following compounds? (iv) Adrenaline (Epinephrine)
(iii) Nicotinic acid
i) Purine
(ii) Chloroquine​

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

Which element would mostly likely have an electron affinity measuring closest to zero