Question

Metals have tendency to lose electrons

Answer 1

Answer:

Metals form positive ions because metals are electropositive, and their outer electrons are very loosely bounded. So, that they lose electrons and gain positive charge and hence from positive ions. Losing electrons is favourable for them to attain octet.

Answer 2

Answer:

(a) The tendency of an atom to lose electrons increases on moving down in a group of the periodic table. As we go down in group 1, one more electron shell is added at every stage and the size of the atom increases. The valence electrons become more and more away from the nucleus and hold of the nucleus on valence electrons decreases. Due to this, the atoms can lose valence electrons more easily to form positive ions and hence electropositive character increases.

(b) The tendency of an atom to gain electrons decreases on going down in a group of the periodic table. When we move from top to bottom in group 17, a new shell of electrons is added to the atoms at every step, due to which the size of atom increases. The nucleus goes more deep inside the atom due to which the attraction of nucleus for the incoming electron decreases due to which the atom cannot form negative ions easily and hence the electronegative character decreases.

Explanation:

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