1. The smallest unit of an element is an _______________. This is made of an ato

Question

1. The smallest unit of an element is an _______________. This is made of an atomic nucleus where ______ ______________ and protons are located. Then there are electron shells surrounding the atomic nucleus where ______________________ are located.   If an atom gains or loses an electron during an _____________ bond, the atom becomes an ________________.

2. Polar molecules share electrons ____________________. So one side of the molecule has a partial _______________ charge and the other end has a partial negative charge. Later, if two of these molecules are by each other they will be attracted to each other forming a _______________________ bond.

Explanation / Answer

1)  The smallest unit of an element is an atom. This is made of an atomic nucleus where neutrons and protons are located. Then there are electron shells surrounding the atomic nucleus where electrons are located. If an atom gains or loses an electron during an ionic bond, the atom becomes an ion.

2) Polar molecules share electrons asymmetrically. So one side of the molecule has a partial positive charge and the other end has a partial negative charge. Later, if two of these molecules are by each other they will be attracted to each other forming a covalent bond.

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