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-Dominant- [34]
3 years ago
14

A calcium atom has two valence electrons. Do you think it will lose two electrons or gain six

Chemistry
1 answer:
stiks02 [169]3 years ago
6 0

Answer:

A calcium atom will lose its two electrons to obtain an octect in its outermost electron shell.

Explanation:

When a calcium atom loses two electrons, it becomes a positive ion. Due to the process of chemical bonding, it is easier for calcium to lose 2 atomes rather than gaining 6 more atoms.

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In an ionic compound, the size of the ions affects the internuclear distance (the distance between the centers of adjacent ions)
gregori [183]

Answer:

The correct answer will be " RbF > RbCl > RbBr > Rbl".

Explanation:

The size of the given ions will be:

<u>RbCl:</u>

⇒  689kJ/mol

<u>RbBr:</u>

⇒  660kJ/mol

<u>Rbl:</u>

⇒  630kJ/mol

<u>RbF:</u>

⇒  785kJ/mol

Now according to the size, the arrangement will be:

⇒  (785kJ/mol) > (689kJ/mol) > (660kJ/mol) >(630kJ/mol)

⇒  RbF > RbCl > RbBr > Rbl

The bond among all opposite charging ions seems to be strongest whenever the ions were indeed small.

6 0
3 years ago
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inn [45]

Answer:

Different isotopes of an element generally have the same physical and chemical properties because they have the same numbers of protons and electrons.

8 0
3 years ago
The metallic compound reduced to the metal by electrolysis is _____
Mice21 [21]

Answer:

Magnesium oxide

Explanation:

When magnesium reacts with oxygen, the magnesium atoms donate electrons to O2 molecules and thereby reduce the oxygen. Magnesium therefore acts as a reducing agent in this reaction. The O2 molecules, on the other hand, gain electrons from magnesium atoms and thereby oxidize the magnesium.

3 0
3 years ago
15. How many atoms are in Li(OH2)3?
n200080 [17]

Answer:

6 Atoms

Explanation:

Li has 3 atom

O has 1 atom

H has 2 atoms

<h3>Hope this Helps!!</h3>

:)

8 0
3 years ago
On-metals in group 17 on the periodic table most commonly form which type of ion?
EleoNora [17]

Answer:

1- ions

Explanation:

Non-metals in group 17 on the periodic table most commonly forms -1 ions with other chemical species.

This is because of their atomic structure

Group 17 is made up of halogens which are fluorine, chlorine, bromine, iodine and astatine.

Because each of the elements has seven electrons in the outer shells of their atoms which implies that they lack one electron to become an octet, the elements are all univalent and also acceptors of electrons.

3 0
3 years ago
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