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Cerrena [4.2K]
3 years ago
8

how do you tell if an element has positive or negative charge. And how do you know when the valence electrons have to be shared

or not​
Chemistry
1 answer:
Eva8 [605]3 years ago
7 0

Answer:

A normal atom has a neutral charge. When you are missing electrons it has a positive charge. When you have extra electron, you have a negative charge. I am not sure what the answer to your second question is, sorry.

Explanation:

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5. Can you determine the number of neutrons in the nucleus of an atom by looking at the element's average atomic mass and the at
Shkiper50 [21]

Answer:

No you can't

Explanation:

The atomic number is the amount of protons in element's nucleus, that's one reason why. The second reason is that the atomic mass is protons and neutrons combined, their estimated value, which doesn't show how much neutrons are in an element. It does show combined, but not specifically neutrons

7 0
2 years ago
Which of the following is the correct name for MgCI?
kupik [55]

Answer:

C - Magnesium Chloride

Explanation:

The metal in a compounds name is always pronounced, and if the last element is a non-metal, the first half of the element is used and the last part is replaced with "ide"

7 0
3 years ago
How many atoms of Ga are there?
xz_007 [3.2K]
The answer is 2

Hope this helped ??
5 0
2 years ago
Which of the following does not apply to water molecules?
serg [7]

Answer:

It is the last one.

Explanation:

Water molecules are polar, they have cohesive properties, and water is less dense when it is solid than when it is a liquid, that is why ice floats in liquid water. However, water is a very good solvent, it can dissolve many solids, including sugar, salt, and other hydrophilic substances.

4 0
2 years ago
Write the mole ratios of (2ca+o2➡2cao)
tresset_1 [31]
N(Ca)/2 = n(O)/1 = n(CaO)/2

The calcium and the Calcium Oxide are divided by 2 because of their coefficients
there is no number in front of the oxygen so it is over one.
Hope this helped!!
6 0
3 years ago
Read 2 more answers
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