"4 d 10th time, guys! I'm not talking about a political party but the 46th element! Palladium!" :) Maybe? That's a hard one to do. Couldnt you do mercury? I have a wonderful joke for that one.
Why coudnt mercury hold still in class?
A. Because it was 80Hg! (get it? Say it vocally :) Sounds like ADHD right?)
Answer:
a
Explanation:
the bond is shared between the atoms because whith out it you cant have one
15.0 g/342.2965= .0438 mol
The correct answer is both newlands and mendeleev arranged elements according to their atomic masses, but only mendeleev used chemical properties as well.
The explanation:
1- Newlands arranged all the elements known at the time into a table in order of relative atomic mass. ... He then put the similar elements into vertical columns, known as groups.
2- Mendeleev also arranged the elements known at the time in order of relative atomic mass, but he did some other things that made his table much more successful.
He realised that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.
Answer : The correct option is,
Explanation :
Molar mass : It is defined as the mass of the substance in grams or kilograms present in the one mole of substance.
The unit of molar mass is, gram/mole or g/mol.
Given : Molar mass of = 44.01 g/mole
That means, one mole of contains 44.01 gram of .