They are the building blocks of matter.
“They are the smallest particles of any material” is <em>incorrect.</em> They all consist of smaller protons, neutrons, and electrons.
“They are the most expensive materials on earth” is <em>incorrect</em>. Most of the common elements cost less than $100/kg.
“They break down easily” is <em>incorrect</em>. Many elements are so stable that you can find them in the uncombined state.
Answer:
Lewis structure of has been given below and formal charge of S is +2
Explanation:
- Lewis structure is drawn by placing least electronegative atom (except H) as central atom. Here S is least electronegative atom. Hence S is the central atom.
- Total valence electrons are calculated by adding valence electrons of all the constituting atoms. These electrons are used to make Lewis structure by fulfilling octet of all atoms and duet of hydrogen atoms.
- Total valence electron in is 24. Octet of S and two oxygen atoms should be fulfilled by using 18 electrons to draw Lewis structure.
- Formal charge on an atom = (no. of valence electrons)-(no. of covalent bonds)-(no. of electrons in lone pair/2)
- Lewis structure is given below
Answer:
Oxygen has an atomic number of 8 , and the mass number of an atom is the sum of its atomic number plus its neutron number. We got the mass as 16 units, and so it'll have 16−8=8 neutrons.
Explanation:
The answer to this would be false.
Molarity=(initial molarityxinitial volume)/final volume
M=(3.5x25.4)/166.7=0.533 M