Answer:
On the basis of atomicity, molecules can be classified as : Monoatomic-composed of 1 atom e.g. He, Ne, Ar (all noble gases are monoatomic) Diatomic-composed of 2 atoms e.g. H2 , N2 , O. Triatomic-composed of 3 atoms e.g. O
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True or False
The number of protons in one atom of an element determines the atom’s atomicnumber.
The atomicnumber is the number of protons present basically in an atom's nucleus. The number of protons characterize the individuality of an element i.e., an element with 6 protons is a carbonatom, no matter however many neutrons may be prevalent.
The massnumber of an element is determined by the number of protons and neutrons combined: mass number = protons + neutrons.
To determine the number of neutrons in an atom, subtract the number of protons, or atomic number, from the mass number.
The atomic number is the number of protons in a nucleus that always equals the number of electrons in orbit around that nucleus (in a nonionized atom).
Thus, it can be concluded that the atomicnumber is determined by the number of protons in atom.
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The number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge. The atomic number tells you the number of protons in one atom of an element. It also tells you the number of electrons in a neutral atom of that element.
Why do covalent bonds have weak intermolecular forces? (Imfs)
Answer:
Li2O+H2O---->(2)LiOH
Explanation:
you have to balance the equation and not all the blanks have to be filled all the time but if it makes it easier for you in the first 2 question marks you can put a 1 which isnt necessary but if ur a visual person it will help.
hope this helps im litterally learning the same thing as u lol
Answer:
1,1,2
Explanation:
this was correct for me, if it wasnt correct check if youre on the right question
The concept of significant figures are mainly used by scientist and engineer to know the significance of digits in a measurement. Therefore, significant figures gives an idea about the digits that are necessary to indicate the experimental value.
Significant figures are the figures that indicate the degree of accuracy of a value. It tells about the precision of a value.
Rules for counting significant figures are:
Number between 1 to 9 is always significant
Zeroes after a number has got no significance
Zeroes before a number has got no significance
Zeroes between number has got significance
34g 2significant figures
564l 3significant figures
19.3mm 3significant figures
23.45 mg 3significant figures
101 km 3significant figures
3400 g 2 significant figures
Therefore, significant figures gives an idea about the digits that are necessary to indicate the experimental value.
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Answer: Helium is least likely to form bonds.
Explanation:
Helium has the electronic configuration . As the 1s sub-shell is completely filled so there is no need for helium to form bonds with other atoms.
Whereas, nitrogen has the electronic configuration . As the p sub-shell is half filled, it has the tendency to accept more electrons. Therefore, nitrogen is more susceptible to form bonds as compared to helium.
Thus, it is concluded that helium is least likely to form bonds.