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What are the number of metals and non metals present among the 116 elements?
Wiki User
∙ 12y ago
About 75 metals.
Wiki User
∙ 12y ago
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Is alkali metals most suitable for photoelectric emission?
yes, they are, as they have the least ionization energy among all elements
Why an alloy is harder that the individual metals that make it up?
All the best bits from all the metals are combined to make a 'super metal'!! Scientists use the best bits from different metals to design and build metals perfect for different uses. Hope this helped!
What do you think nuclear chemists mean when they say that 8 20 and 50 are magic numbers for isotopes?
It is simply that among period 2 elements, oxygen (8) is one of the elements which has the largest number of isotopes, among period 4 elements, calcium (20) has the largest number of isotopes, and among period 5 elements, tin (50) has the largest number of isotopes. In fact tin has the largest number of isotopes overall.
Why are the elements grouped on the periodic table of elements?
The elements of the periodic table are grouped and organized together based on similar characteristics. These include their atomic number, chemical families (halides, noble gases, metals, gases, transition elements) and nuclear sizes, among other factors.
Is chlorine the most or least reactive of all elements?
Neither. Chlorine is among the most highly reactive nonmetal elements, but fluorine and oxygen are even more reactive, as are the heavier alkali and alkaline earth metals.
In a single replacement reaction which element must be most active?
In terms of reactivity, Potassium(K) is the most reactive element among group 1 elements.
Why are group A elements called Representative elements?
They follow a pattern for valence electrons.
Why were gold and silver among the first metals discovered?
Gold, silver, and copper, are among a few that appear as native elemental metals. Most others have combined with other elements.
5 metals that are pure elements and 3 that are mixtures?
A number of metals were known to ancients because they could be found in their elemental form. We can list gold, copper, silver, lead and tin among the examples of these metals. As regards metals that are mixtures of metals (we call them alloys), brass (a copper and zinc alloy), bronze (a copper and tin alloy), and steel(an iron and carbon alloy) are among the better known.
Which element is not abundantly present in earthcrust is sodiumsiliconoxygen?
Among the elements listed, sodium is present in smaller amounts than the other two elements listed.
Is alkali metals most suitable for photoelectric emission?
yes, they are, as they have the least ionization energy among all elements
Are groups 1 and 2 more or less reactive in periodic table?
Group 1 elements are the most reactive among metals, followed by group 2 elements.
What is earth metal?
Earth metal refers to any of the alkaline metals on the periodic table of the elements. Earth metals include calcium, magnesium, barium, and radium among others.
Why an alloy is harder that the individual metals that make it up?
All the best bits from all the metals are combined to make a 'super metal'!! Scientists use the best bits from different metals to design and build metals perfect for different uses. Hope this helped!
What two elements on the periodic table react violently?
Very reactive elements on the periodic table include the alkali and alkaline earth metals, the halogens, hydrogen, phosphorus, europium, and plutonium among others.
What do you think nuclear chemists mean when they say that 8 20 and 50 are magic numbers for isotopes?
It is simply that among period 2 elements, oxygen (8) is one of the elements which has the largest number of isotopes, among period 4 elements, calcium (20) has the largest number of isotopes, and among period 5 elements, tin (50) has the largest number of isotopes. In fact tin has the largest number of isotopes overall.
What part of the periodic table is the most reactive and least reactive?
The alkali and alkaline earth metals are the least electro negative elements, and the halogens are the most electro negative elements.
