1. | Which of the following is a fundamental property of an element |
A. atomic mass | |
B. molar mass | |
C. atomic number | |
D. atomic density |
2. | 97.2% of the earth’s crust is made up of which elements? |
A. 5 | |
B. 8 | |
C. 11 | |
D. 19 |
3. | The most abundant metal on earth is |
A. Iron | |
B. aluminium | |
C. calcium | |
D. sodium |
4. | The most abundant element on earth is |
A. oxygen | |
B. silicone | |
C. aluminum | |
D. Iron |
5. | transition element is characterized by |
A. unfilled d-orbital | |
B. unfilled f-orbital | |
C. unfilled p-orbital | |
D. unfilled s-orbital |
6. | The last member of each period is |
A. a metal | |
B. a halogen | |
C. an inert gas | |
D. a metalloid |
7. | The first member of each period is |
A. an alkali metal | |
B. a halogen | |
C. an inert gas | |
D. a metalloid |
8. | Which of the following has zero electron affinity |
A. oxygen | |
B. florin | |
C. nitrogen | |
D. Neon |
9. | What is the general property of third and fourth group oxides? |
A. basic | |
B. acidic | |
C. basic and acidic | |
D. Moody |
10. | What is the number of elements in the second period of the periodic table? |
A. 18 | |
B. 8 | |
C. 2 | |
D. 10 |