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3 years ago

Which pair of atoms will MOST likely form a covalent bond?

Chemistry

1 answer:

Gelneren [198K]3 years ago

4 0

Answer:

An atom with 1 valence electron and an atom with 7 valence electrons

Explanation:

Covalent bond:

It is formed by the sharing of electron pair between bonded atoms.

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.

the number of valance electrons of oxygen are six and hydrogen is one that's why two hydrogen atoms are attached with one oxygen atom and complete the octet.

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3 years ago

Which of the following has the largest electronegativity? AI, Cu, S, or O?

puteri [66]

Answer:

O(Oxygen)

Explanation:

Oxygen or O among the given options has the highest electronegativity of 3.5 as compared to 2.4 of sulfur. Thus, there is a lesser attraction in the bonds of Sulfur. <u>The other two elements Al(Aluminium) and Cu are less electronegative than Sulfur and Oxygen as they are metals and possess electropositivity while the latter displays more electronegativity due to being non-metals</u>. Hence, Oxygen is the answer.

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3 years ago

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3 years ago

G write the symbols for the cation and anion that make up each ionic compound Co(NO3)2

aev [14]

Answer:

$Co(NO_3)_2$ is formed of cation, $Co^{2+}$ and anion, $NO_3^{-}$

Explanation:

Naming of the ionic compounds:-

The name of the cation is written first and the the name of the anion is written after the name of the cation separated by single space.
The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
In case of transition metals, the oxidation state are written in roman numerals in bracket in front of positive ions.

Hence, given ionic compound:-

$Co(NO_3)_2$ is formed of cation, $Co^{2+}$ and anion, $NO_3^{-}$

Thus, the name must be Cobalt(II) nitrate.

4 0

3 years ago

defon

Answer:

copper(II) carbonate

7 0

4 years ago