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A-level Chemistry Year 1
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The electron configuration of element X is: 1s22s22p5
What is the formula of a compound formed when potassium reacts with element X?
The electron configuration of element X is: 1s22s22p4
What is the formula of a compound formed when lithium reacts with element X?
Which of the statement(s) below is/are true?
1) The relative charge of an electron is 1-
2) The relative mass of an electron is 1/200
3) Electrons are found in the nucleus of an atom
The electron configuration of element X is: 1s22s22p63s23p4
What is the formula of a compound formed when potassium reacts with element X?
For every individual atom which of the following statements is always true
The electron configuration of element X is: 1s22s22p63s23p5
What is the formula of a compound formed when magnesium reacts with element X?
Which statement best explains the meaning of the term ‘