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harkovskaia [24]
2 years ago
10

An atom has the following electron configuration.

Chemistry
1 answer:
avanturin [10]2 years ago
6 0

Answer:

2

Explanation:

4s2 has 2 valence electrons

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Answer:

Its mass is measured on a scale.

It is measured on a balance.

Explanation:

The mass of an object can easily be determined using a balance or weighing scale.

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Weight is the force on body due to gravity. It is a function of mass and acceleration due to gravity.

Both mass and weight are different.

They can both be measured using a weight device.

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