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e-lub [12.9K]
2 years ago
6

Based on this cell from the periodic table, which statement is true for the

Physics
2 answers:
I am Lyosha [343]2 years ago
8 0

Answer: B

Explanation:

The top number is its atomic number, also known as the number of protons in the atom.

The bottom number is the atomic mass, which is the sum of the number of protons and neutrons.

aliina [53]2 years ago
4 0

Answer:

b

Explanation:

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slava [35]

Answer: D. The elements have the same number of valence electrons

Explanation: The chemical reactivity of elements is governed by the valence electrons present in the element.

The elements present in the same group or vertical column have similar valence configurations and thus behave similarly in chemical reactions or have similar bonding properties.

For Example: Both fluorine and chlorine belong to same family or group and both have 7 electrons in their valence shell and thus accept single electron to attain noble gas configuration.

F:9:1s^22s^22p^5

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3 years ago
When a wave is bent by traveling from one medium to another
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B. Refraction

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Jope this helps

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