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Scorpion4ik [409]
2 years ago
6

Which of these statements is true about photons?

Chemistry
1 answer:
Yuliya22 [10]2 years ago
6 0

Answer: it’s a I believe

Explanation: protons are smaller then atoms which means they have less mass

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Use the drop-down menus to complete each sentence.
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Explanation:

Elements that belong to same group contains same number of valence electrons. Hence, they tend to show similar chemical properties.

When we move across a period then number of electrons get added to the same shell. As a result, there will be no increase in size of elements.

Also, metals are the elements that belong to group 1, 2 and d-block elements are also known as metals. Metallic character of elements decreases when we move left to right in a periodic table.

As most reactive metals are placed on the left side of periodic table.

Since, size of elements increases on moving down the group. So, an element is able to easily lose its valence electrons because of less force of attraction between its nucleus and valence electrons.

As a result, there will be increase in reactivity of metals on moving down the group.

Thus, we can conclude that given sentences are as follows.

  • Elements in the same group have the same number of valence electrons.
  • Elements in the same period have the same number of electron shells.
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3 years ago
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What is mass wasting and how can it disturb the ecosystem ? (Need this ASAP PLEASEE !!!)
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What kind of property is melting point? an atomic property , , , an atomic property , , a physical property , a physical propert
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physical property has a melting point

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2 years ago
According to the website of the National Aeronautics and Space Administration (NASA), the average temperature of the universe is
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Answer : The temperature in degree Celsius is, -270.45^oC

Explanation :

The conversion used for the temperature from Kelvin to degree Celsius is:

^oC=K-273.15

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^oC = temperature in centigrade

As we are given the temperature in Kelvin is, 2.7

Now we have to determine the temperature in Kelvin.

^oC=K-273.15

^oC=2.7-273.15

^oC=-270.45

Therefore, the temperature in degree Celsius is, -270.45^oC

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B. Water will freeze

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