Based on atomicity , how molecules are categorized

Answers

Answer 1

Answer:

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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4.75 mL is the same as 0.00475 L.
True or False

Answers

True. 1mL equals 1x10⁻³L so to convert mL into L you have to move the decimal point over 3 places to the left.

I hope this helps. Let me know in the comments if anything is unclear.

The number of protons in one atom of an element determines the atom’s?

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The number of protons in one atom of an element determines the atom’s atomicnumber.

What is atomic number?

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.

For more details regarding atomic number, visit:

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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 ionic bonds have strong intermolecular forces? (Imfs)&
Why do covalent bonds have weak intermolecular forces? (Imfs)

Answers

The wording of your question is a bit strange (we usually don't say that bonds have IMFs and ionic compounds don't consist of molecules), but the answer to your question has to do with bond polarity. Strong IMFs are associated with very polar bonds (because increased polarity means greater magnitudes of charges at the poles and, hence, greater electrostatic attraction). Since ionic bonds involve the transfer of entire units of charge (to form cations and anions), they are highly polar (and highly polar means strong IMFs). Polarity in covalent bonds, however, does not arise from transfer of entire units of charge. Rather, they involve unequal sharing of electrons, and thus partial charge. Covalent bonds are, therefore, not as polar as ionic bonds (and less polar means weaker IMFs). I think it would be a good idea to keep in mind, though, that your question should be more along the lines of "Why are ionic bonds more polar than covalent bonds?".

(?)Li2O + (?)H2O → (?)LiOH

Answers

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

Can someone pls help indicate the number of significant figures with these numbers: 34g, 564 l, 19.3 mm, 23.45 mg, 101 km, and 3400 g

Answers

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.

What is significant figures?

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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The significant figures is two because that is the least amount of spaces before the decimal out of those numbers

Which of the following is least likely to form bonds? helium hydrogen nitrogen oxygen

Answers

Answer: Helium is least likely to form bonds.

Explanation:

Helium has the electronic configuration $1s^(2)$ . 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 $1s^(2) 2s^(2) 2p^(3)$ . 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.

Helium as it's a nobel gas and therefore does not need to form any bonds to get a full shell of outer electrons (as its shell is already full) making it stable.

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