Asked by mary
7. (a) The following elements represent atoms of elements showing their mass numbers and atomic numbers:
40 Ar and 39 K
18 19
i. Explain why argon has lower atomic number but greater atomic mass than that of potassium.
ii. Explain why argon is neither metallic nor non-metallic element?
iii. Potassium has atomic number of 19. Give three deductions which can be made from this statement.
40 Ar and 39 K
18 19
i. Explain why argon has lower atomic number but greater atomic mass than that of potassium.
ii. Explain why argon is neither metallic nor non-metallic element?
iii. Potassium has atomic number of 19. Give three deductions which can be made from this statement.
Answers
Answered by
DrBob222
1. Ar has 18 protons and 22 neutrons; K has 19 protons and 20 neutrons.
2. Can't do it. Ar is about as non-metallic an element as you would want.
3. Deductions: Three facts are K has 19 protons. K has 19 electrons. K has no net electric charge.
2. Can't do it. Ar is about as non-metallic an element as you would want.
3. Deductions: Three facts are K has 19 protons. K has 19 electrons. K has no net electric charge.
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