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Gemiola [76]
3 years ago
10

Why are elements in the tall columns of the periodic table called

Chemistry
1 answer:
Natalka [10]3 years ago
5 0
The answer is they follow a patter for valence electrons.
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What elements can join wit other elements o form a covalent bond
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Non metals join to form covalent bond.

Explanation:

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The atom with larger electronegativity attract the electron pair more towards it self and becomes partial negative while the other atom becomes partial positive.

For example:

In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial positive.

Both atoms bonded through covalent bond.

In Cl₂ both chlorine atoms are bonded through the covalent bond.

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