The periodic table - OCR G

1

In what order did Mendeleev place the elements to form his first periodic table?

2

How are the elements arranged in the modern periodic table?

3

Why did Mendeleev leave gaps in his periodic table?

4

What is the electron arrangement of an element with an atomic number of 16?

5

Which statement about the elements in the modern periodic table is correct?

6

What name is given to the horizontal rows in the periodic table?

7

An element has the electron arrangement 2.8.8.2. Where is this element placed in the periodic table?

8

Which feature of an element's atoms has most effect on its chemical properties and reactions?

9

Which element will have similar chemical properties to the element whose atoms have: Atomic number = 18, Mass number = 40, Electron arrangement = 2.8.8

10

Which set of three physical properties do most metals show?