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dexar [7]
3 years ago
14

An atom of the element chromium has an atomic number of 24 and a mass number of 52. How many electrons are in an uncharged atom

of chromium? 0 24 28 52
Chemistry
2 answers:
Leni [432]3 years ago
7 0
24. In an uncharged atom the number of electrons always equals the number of protons, which is the atomic number.
vladimir1956 [14]3 years ago
6 0

Answer : The correct option is, '24'

Explanation :

Element = Chromium

Atomic number = 24

Mass number = 52

The electronic configuration of chromium atom is,

1s^22s^22p^63s^23p^64s^13d^5

As per electronic configuration, the number of electrons are = 24

or,

Atomic number = Number of electrons = Number of protons

Mass number = Number of protons + Number of neutrons

As we know that the atomic number is equal to the number of electrons. So, the number of electrons in an uncharged atom of chromium are '24'.

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Sometimes people do not want to change their belief regardless of the evidence.
bagirrra123 [75]

Answer:

True

Explanation:

Ex. People against vaccines tend to believe crazy theories over facts because they think they'll end up brainwashing them.

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3 years ago
When rubbed against a silk cloth, a glass rod loses electrons. How does this affect the charges of the glass rod and the silk cl
AURORKA [14]

Answer:

Explanation:

The glass rod losses electrons because the silk cloth has a positive charge so it attracts the negative charge of the glass rod.

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3 years ago
Purchasing the correctly sized BMX bike is based on the height of the rider. In order to fit a customer, the salesman can use th
Phantasy [73]
Answer: Your best answer is A.

Explanation: 1.35 is a constant and thus is does not change. The equation can be simplified to-
“b = (0.29 x h)+ 1.35”
So, if your rider is say 60 inches tall, the equation would change to-
“b = (0.29 x 60)+ 1.35”
Then to-
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Hope this helped :)
5 0
2 years ago
What have chemists done to help pople conserve energy
Ainat [17]
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4 0
4 years ago
Rank the following substances in order from most soluble in water to least soluble in water: methane, CH4; 2-butanol, C4H9OH; ma
inna [77]

Answer:

MgCl2 > C4H9OH > CH4 > C3H8.

Explanation:

Alkanes do not form hydrogen bonds and are insoluble in polar solvents e.g water. The hydrogen bonds between water molecules are move away from an alkane molecule and this worsens as their Carbon chain / molecular weight increases.

MgCl2 is soluble in water. Water essentially breaks down the ionic crystal lattice and the resulting solution is slightly basic.

Alcohols are generally soluble in water and this is because of the -OH group and its ability to form hydrogen bonds with water molecules. As applied to alkanes, as the carbon chain in the alkyl group increases, the solubility decreases.

From the most soluble to the least soluble,

MgCl2 > C4H9OH > CH4 > C3H8.

4 0
3 years ago
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