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jessie nicole lagenour
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∙ 12y ago
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Why were there no more than 60 elements on the first periodic table?
Because only 60 elements were discovered / known at that time
Why were there only 33 elements in the first periodic table?
Because that's how many had been discovered at that time.
How was the person who devised the first periodic table able to predict the behavior of elements such as gallium scandium and germanium that had not even been discovered yet?
The reason the periodic table was created in the first place was to illustrate the "periodic" physical properties of the known elements of the time. Because of this, the properties of elements that were "missing" from the table could be extrapolated from the periodic trends seen in the known elements.
Why must some chemical elements have two letters rather than one?
The reason why some element symbols have two letters instead of one is that some elements start with the same letter. It would be very difficult to distinguish elements if two both had the same symbol. For example, Carbon and Calcium both start with the letter "C", but Calcium's symbol is "Ca". Also, some, like Iron's "Fe", were named a long time ago, and chemists had different names for them.
Who was the first time to organize the elements on the periodic table?
In 1869, a Russian chemist named Dmitri Mendeleev came up with a way of organizing the elements.and arranged them in ascending atomic number
What invention allowed the user for the first time to change the typestyle of text?
The typewriter was the invention that allowed users to change the typestyle of text for the first time. It gave users the ability to easily switch fonts and styles by changing out the physical typebars or type elements.
Who gave the first time adhan?
Bilal (radiallahuanhu)
Who gave the term mitosis first time?
Walther Fleming
Why were there no more than 60 elements on the first periodic table?
Because only 60 elements were discovered / known at that time
How did Stephen Hawkins help us?
he is a skilled and knowledgeable scientist who gave us a broader and more detailed understanding of time and its elements.
Who gave the concept of stable population for the first time?
A J Lotka
What was the earliest device for measuring time?
The sun and its rise and set gave the very first time lines.
Which plan gave emphasis on removal of poverty for first time in India?
fifth
What was the magna carta's significance?
For the first time it gave rights to the common man.
What did Mendeleev predict about the periodic table?
The gaps in the first periodic elements described those elements which were not discovered at that time. Eg-silicon,germanium etc
How many rose to send a women for the first time?
I gave 12 cuz it was all I could afford at the time!
What scientist was the first to make a list of elements known at that time?
Dmitri Mendeleev was the first scientist to create the periodic table
