5/1 quiz1

Write the name of the following symbol of elements.

1. C-

2. Ba-

3. Br-

4. Cl-

5. Fr-

6. Rb-

7. Sr-

8. Mn-

9. I

10. V

Write the symbol of the elements given below.

1. Magnesium-

2. Phosphorus-

3. Francium-

4. Boron-

5. Sodium-

6. Radon-

7. Francium-

8. Helium

9. Manganese-

10. Astatine-

Silver has an atomic number of 47 and has a mass number of 108. Find:(2 marks)

1. electron number

2. neutron number

Mercury has atomic number of 80 and 121 neutron number. Find the nucleon number and proton number.(2 marks)

What is the electronic configuration of the following:(3 marks)

1. Neon: 10e-

2. Potassium: 19e-

3. Oxygen: 8e-

Group properties. (3 marks)

What is the other term used in

1.group 1

2. group 7

3. group 8

What group..(3 marks)

1. has a +1 charge?

2. is a diatomic group?

3. all elements in this group is radioactive.

What element is described?Write the symbol of the elements(2 marks)

1. the only liquid metal in the periodic table.

2. the only liquid non-metal of the periodic table.

what does it mean by the word "lustrous"?