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How many electrons does element have?
38
Elements are organized in the periodic table by their?
Elements are organized in the periodic table by their atomic number, which represents the number of protons in the nucleus of an atom. The atomic number determines the unique properties of each element, and elements with similar properties are grouped together in columns called groups.
How can you calculate the number of electrons in an atom?
For a neutral atom they must have equal numbers of protons and electrons. The atomic number is the number of protons in an atom of an element. Find the atomic number by looking at the periodic table of elements.
Who ionisation energy differs?
Ionisation energy differs between elements due to variations in the number of protons in their nucleus, which affects the strength of the attraction between the electrons and the nucleus. Elements with higher atomic numbers typically have higher ionisation energies due to increased nuclear charge. Additionally, ionisation energy generally increases across a period and decreases down a group on the periodic table.
What are the heaviest metals on the heaviest metals list?
The heaviest metals on the periodic table are typically considered to be elements like uranium, plutonium, and curium. These elements have high atomic numbers and are known for their dense and heavy properties.
Why don27t elements in the periodic table have whole numbers for their atomic masses?
Because the masses of protons, neutrons and electrons are not whole numbers.
What is a family on the periodic table?
A family is a column in a periodic table; all elements in a family have similar physical and chemical properties, because they have the same numbers of valence electrons (outer electrons).
What is the law called that states the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements?
An element's atomic number is equal to the amount of electrons or protons in an atom of that element. When an atomic number increases or decreases, the amount of electrons is changing.
Are the numbers of neutrons the same for elements in the same column on the periodic table?
No. It is not the same. the number of valence electrons are same for the elements in the same column (group).
What are the group numbers and the generic outer electron configurations for a neutral atom?
Group numbers are used in the periodic table to indicate the number of valence electrons in an element. The generic outer electron configuration for a neutral atom can be determined by looking at the group number: Group 1 elements have 1 valence electron and end in s1, group 2 elements have 2 valence electrons and end in s2, group 13 elements end in s2p1, etc.
What happens to oxidation numbers as you move left to right on the periodic table?
Oxidation numbers generally increase from left to right on the periodic table. This is because elements on the left side have fewer valence electrons and are more likely to lose electrons (becoming more positive), while elements on the right side have more valence electrons and are more likely to gain electrons (becoming more negative).
What is the same within each group on the periodic table?
Elements within the same group on the periodic table have the same number of valence electrons, which influences their chemical behavior. This results in similar properties and reactivity within a group of elements.
How many elements are there in the first period of periodic table?
There are 2 elements in the first period of the periodic table: Hydrogen and Helium.
Do Atoms have no overall eletric charge?
Elements, as they appear on the Periodic Table, have no net charge. They all have equal numbers of protons (+) and electrons (-). HOWEVER, an atom can gain or lose electrons, which will change its charge, but, again, on the periodic table, they all have 0 charge.
What is the relationship between column numbers and number of valence electrons?
theses are not called colmns but are called groups of periodic table.the relation between them is that in the periodic table the elements are placed in such a way that the the number of electrons in the outermost shell are equal to the group number.
How do you find electrons in elements on the periodic table?
The number of electrons are equal to the number of protons which is equal to the atomic number. That's if you're trying to find the number of total electrons. If you want to find the number of valence electrons (electrons in the outermost shell) you must look at the group numbers. The group number is equivalent to the number of valence electrons.
Why do elements within a periodic the periodic table have different properties?
They have different numbers of valance electrons...
