1a5 marks
This question is about chemical elements.
Use the Periodic Table to help you answer this question.
a) i)
Identify the element with atomic number 5
(1)
ii)
Give the symbol of a metallic element in Period 3
(1)
iii)
Identify the element whose atoms contain 14 protons.
(1)
iv)
Identify the element whose atoms have the electronic configuration 2.5
(1)
v)
Give the name of the compound formed between oxygen and the element with atomic number 13
(1)
1b2 marks
b)
The position of an element in the Periodic Table can be used to predict its properties.
i)
Which group contains elements that are all unreactive?
(1)
| ☐ | A | Group 2 | |
| ☐ | B | Group 5 | |
| ☐ | C | Group 6 | |
| ☐ | D | Group 0 |
ii)
Which of these is the least reactive element in Group 1?
(1)
| ☐ | A | caesium | |
| ☐ | B | lithium | |
| ☐ | C | potassium | |
| ☐ | D | sodium |
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