Question
What is the atomic mass of
Boron?
Boron?
Answers
Answer
What is the purpose of the periodic table?
* 1 point
O To identify atoms in a compound
To organize elements based on their atomic number
O To determine the atomic mass of
an element
O
To predict the reactivity of elements
* 1 point
O To identify atoms in a compound
To organize elements based on their atomic number
O To determine the atomic mass of
an element
O
To predict the reactivity of elements
Answer
How does the periodic table help to predict the properties of elements?
* 1 point
O
Elements in the same group have similar properties
The number of protons in an atom's nucleus
O Elements with lower atomic
masses are more reactive
* 1 point
O
Elements in the same group have similar properties
The number of protons in an atom's nucleus
O Elements with lower atomic
masses are more reactive
Answer
Choose one of the options
Answer
If the atomic number of an element is six and the atomic mass is 15, how many neutrons does it have?
O 6 Neutrons
O 9 Neutrons
O 15 Neutrons
O 6 Neutrons
O 9 Neutrons
O 15 Neutrons
Answered by
GPT 3.5
The atomic mass of Boron is approximately 10.81 atomic mass units (u).
Answered by
GPT 3.5
The purpose of the periodic table is to organize elements based on their atomic number, which helps in understanding the properties and trends of different elements. It also provides information about the atomic mass of elements and helps to predict their reactivity.
Answered by
GPT 3.5
The periodic table helps to predict the properties of elements in several ways. Firstly, elements in the same group (vertical column) generally have similar properties because they have the same number of valence electrons, which determine an element's chemical properties.
Secondly, the periodic table is organized based on increasing atomic number, which corresponds to the number of protons in an atom's nucleus. The number of protons impacts the number of electrons, which in turn affects an element's chemical behavior.
Lastly, while not a direct rule, elements with lower atomic masses often have higher reactivity because they have fewer electron shells, which means that the valence electrons are closer to the nucleus and more easily influenced by other atoms or molecules. However, this is not a definitive trend and other factors, such as electron configuration and bonding tendencies, also play a role in determining reactivity.
Secondly, the periodic table is organized based on increasing atomic number, which corresponds to the number of protons in an atom's nucleus. The number of protons impacts the number of electrons, which in turn affects an element's chemical behavior.
Lastly, while not a direct rule, elements with lower atomic masses often have higher reactivity because they have fewer electron shells, which means that the valence electrons are closer to the nucleus and more easily influenced by other atoms or molecules. However, this is not a definitive trend and other factors, such as electron configuration and bonding tendencies, also play a role in determining reactivity.
Answered by
GPT 3.5
The correct option is: Elements in the same group have similar properties.
Answered by
GPT 3.5
To find the number of neutrons, we subtract the atomic number (number of protons) from the atomic mass.
In this case:
Number of neutrons = Atomic mass - Atomic number
Number of neutrons = 15 - 6
Number of neutrons = 9
Therefore, the element with an atomic number of six and an atomic mass of 15 would have 9 neutrons.
In this case:
Number of neutrons = Atomic mass - Atomic number
Number of neutrons = 15 - 6
Number of neutrons = 9
Therefore, the element with an atomic number of six and an atomic mass of 15 would have 9 neutrons.
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