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Alexeev081 [22]
4 years ago
12

How to determine how many valence electrons an element has?

Chemistry
1 answer:
In-s [12.5K]4 years ago
8 0
Usually (ignoring transition metals, as they kinda get trickier), the element's valency can be found out by its group (column) number. Usually, we ignore the transition metal block while counting these columns, so Aluminium is in group 3, for example. Since Aluminium is in group 3, it has 3 valence electrons.
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maxonik [38]
A Hypothesis.

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7 0
3 years ago
How many electrons would be found in the Ion who’s symbol is I-
Vesnalui [34]

Answer:

54

Explanation:

Given symbol of the element:

                   I⁻

Number of electrons found in an ion with the symbol:

  This is a iodine ion:

         For an atom of iodine:

                   Electrons  = 53

                   Protons  = 53

                   Neutrons  = 74

An ion of iodine is one that has lost or gained electrons.

For this one, we have a negatively charged ion which implies that the number of electrons is 1 more than that of the protons.

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6 0
3 years ago
What happens when sodium and cholorine are mixed
tigry1 [53]

Answer:

The short of it is you would create salt.

Explanation:

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5 0
3 years ago
Read 2 more answers
What is the total number of valence electrons in the lewis structure of sebr2o?
zloy xaker [14]

Answer:

15.4: Lewis Structures: Counting Valence Electrons

Explanation:

3 0
2 years ago
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miss Akunina [59]

Answer:

iv. The motion between A & B moves at a further distance than C & D's

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vi. It takes approx. 80 seconds

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Explanation:

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vii (2) needs further explanation:

Though there is a moment of rest, the cyclist still travels the same speed throughout the entire trip. To check this answer however, you can total the distance and time the cyclist traveled and use speed formula to get 10 meters per second, again.

6 0
3 years ago
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