2
5. (1)
(i) Which is greater in size ?
(a) an atom or a cation
(b) an atom or an anion
(c) Fe2+ or Fe3+
Answers
Answer:
⭐_____Answer______⭐
(i) An atom is always bigger than cation since cation is formed by the loss of electrons; hence protons are more than electrons in a cation. So the electrons are strongly attracted by the nucleus and are pulled inward.
(ii) An anion is bigger than an atom since it is formed by gain of electrons and so the number of electrons are more than protons. The effective positive charge in the nucleus is less, so less inward pull is experienced. Hence the size expands.
(iii) Fe2+ is greater in size than Fe3+. ... This is because the outermost electron in the Fe2+ ion is pulled off to form Fe3+ ion. As the electrons are removed, it reduces the repulsion increasing nuclear charge experienced by each of the other d electrons and decreases the size of the ion.
Explanation:
hope this helps you...,..
give thanks = take
follow me
Answer:
an atom or cation is greater in size