The given question is incomplete. The complete question is :
Which of the following Group 17 elements is the least reactive
a) Flourine
b) Chlorine
c) Astatine
d) Iodine
Answer: c) Astatine
Explanation:
Halogen is the name given to Group 17 family with general electronic configuration of 
which have 7 valence electrons and thus easily gain one electron to attain stable configuration.
As we move down the group from flourine to chlorine to bromine to iodine to astatine , the valence shell moves farther from nucleus and thus tendency to accept the electron decreases and thus reactivity also decreases.
Thus Astatine is the least reactive of all.
Answer:
Explanation:
These different types of solids have different properties that depend on the particles ... C4.3i, Explain why ionic solids have higher melting points than covalent solids. ... of each of the six compounds, predict from the Periodic Table which should be ionic ... Check each of six compounds – NaCl, sugar, KCl, KI, camphor, and.
Answer:
The functional group present in Cinnamon are : Aromatic , alkene , aldehyde
The functional group present in Almonds : Aromatic , aldehyde
The functional group present in DHA : Ketone , alcohol
Explanation:
<u>Almond :</u>
Chemical formula : 
It contain : A benzene ring (Aromatic) , a -CHO group (aldehyde)
<u>Cinnamon Sticks</u> :
Chemical Formula : 
It contain : A benzene ring (Aromatic) ,an alkene group (C=C) , a -CHO group (aldehyde)
<u> </u><u>DHA:</u>
Chemical Formula : 
It contain : Alcohol group (-OH) , ketone group (C=O)
Answer:
The answer according to me is (9.1)
