What structure of an atom take part in a covalent bond?

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Which element is the least metallic between cadmium, silver, zinc, or iron?

Gwhich r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? which r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? −ch2−oh −ch2−o||c−nh2 −ch2−coo− −ch2−ch2−ch2−ch2−n+h3