Question

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Answer 1

Answer:

Question 1:

Answer: True

• A nucleus comprises of "proton and neutron"

Question 2:

Answer: True

• Lithium atom has 3 protons while helium atom has 2 protons.

Question 3:

Answer: False

• Molecular compounds are formed when elements are combined be it metal or non-metal.

• A compound formed from a metal and non-metal is an ionic compound.

Question 4:

Answer: False

• Noble gases are inert / unreactive. They don't undergo any reaction because they are very stable.

Question 5:

Answer: True

Question 6:

Answer: False

${ \rm{H _{2}O \: \dashrightarrow \: water}}$

• The formular in the question is for hydrogen peroxide.

Question 7:

Answer: False

• What you have to know is that, molecular compounds such as halogens are made of discrete particles with weak vander waals forces of attraction, hence energy required to break these forces is quite low. Hence low melting points.

Question 8:

Answer: True

• Ionic compounds such as sodium chloride are highly soluble in water.

Question 9:

Answer: False

• Water is a polar covalent compound because it is formed due to hydrogen and covalent bonding. It is polar because oxygen is highly electronegative than hydrogen.

Question 10:

Answer: False

• Check answer for question 4

Question 11:

Answer: False

• They form charge of +1

Question 12:

Answer: True

• This are called radicals

Question 13:

Answer: False

• least reactive families are halogens and noble gases.

Question 14:

Answer: True

• This is a situation of ionic bonding.

Question 15:

Answer: False

• It is made up of 3 atoms.

Answer 2

1. True
2. True
3. True
4. False
5. False
6. False
7. False
8. True
9. False
10. False
11. False
12. True
13. False
14. True
15. False

After looking at answers I agree with the statement Chemistry is fun.