C3a What Are Atoms Like Question Higher

C3a What Are Atoms Like Question Higher Paper

HideShow resource information
  • Created by: Amira
  • Created on: 05-05-12 09:32
Preview of C3a What Are Atoms Like Question Higher

First 245 words of the document:

C3aHigher only:
1. Fill in the missing information for the following atoms:
Number of Protons: number of neutrons: mass number: atomic
number:
Number of Protons: number of neutrons: mass number: atomic
number:
Number of Protons: number of neutrons: mass number: atomic
number:
2. Fill in the following table and complete the following sentence too:
Isotope Carbon12 Carbon13 Carbon14
Atomic number
mass number
Number of neutrons
All the three types of carbon atoms have the same atomic number but different
mass number. They are called isotopes.
3. Oxygen's atomic number is 8. It's electronic arrangement is: 2:8:6
Write down electronic arrangements for aluminium, whose atomic number is 13.
4. Which group does aluminium belong to? Can you explain based on its electronic
arrangement?
5. Work out the identity of the following isotopes:
a. 8 protons, 8 electrons, 10 neutrons
b. 19 protons, 19 electrons, 22 neutrons
c. 7 protons, 7 electrons, 8 neutrons
6. Using the "dot and cross" model, the ionic bonding in the following: ( Use a
separate plain paper to draw these)
sodium chloride
magnesium oxide
sodium oxide
magnesium chloride.
7. Write down the formulae of the ionic compound, using the electronic charges
of ions shown below. One has been shown for you:
a. Mg2+ Cl Formulae: MgCl2
3+ 2
b. Al O Formulae:
c. Mg2+ O2 Formulae:
+ 2
d. Na O Formulae:

Comments

No comments have yet been made

Similar Science resources:

See all Science resources »See all resources »