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Question
Write the full form of IUPAC.
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Solution
The full form of IUPAC is International Union of Pure and Applied Chemistry.
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(f) Write the symbol of the ion formed by an atom of element E.
(g) What could element X be?
The electronic configuration of an element Z is 2, 8, 8.
(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
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(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.
Define the following term:
Atom
A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –
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Which of the following statements made by Dalton has not undergone any change?
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______ is the smallest particle of an element.
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Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.
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