Atoms are electrically neutral because they contain equal quantities of positively charged protons and negatively charged electrons. Electrons and protons have equal but opposite charges, so the result is no net charge. Ions are atoms that have gained or lost electrons.
Answer:
Unit cells which are present per cubic centimeter of Ag = 
Volume = 
Edge length = 
Explanation:
(a)
Given that:-
The density of the solid Ag = 10.5 g/cm³
Molar mass of silver = 107.8682 g/mol
So, Moles present per cm³ of Ag = 
=0.0973 mol/cm³
Also, 1 mole = 
atoms.
So,
Atoms present per cm³ of Ag = 
Thus, answer = 
In FCC, the number of atoms in the unit cell = 4 unit cells
So,
Unit cells which are present per cubic centimeter of Ag = 
<u>Unit cells which are present per cubic centimeter of Ag = </u>
(b)
The reciprocal of the unit cell/cm³ is the volume of the unit cell.
So, 
<u>Volume = </u>
(c)
Also, Volume = 
Thus, edge length = 
= 
<u>Edge length = </u>
1) 1
2)1600
3)0.109
4)0.250
5)14000
6)1000
7)4.8
8)0.027
9)0.198
10)0.075
11)0.50
12)5000
13)1.6
14)65000
15)25
16)0.355
17)0.08
18)63
19)560
20)260
21)0.0565
22)0.0275
23)9.23
24)2500
It was fun!
Answer:
As the difference in electronegativity between two atoms decreases, the tendency for the formation of covalent bonds "increases"
Explanation:
Electronegativity being a chemical property which tells us about the tendency about the atom in order to fascinate the shared pair of the electron towards itself. It is being pretentious by atomic number and the distance as well, by the help of which the valence electrons resides from the charged nucleus. In the scale Pauling scale is used. Being the most electronegative element fluorine is counted. The more the electronegativity, the more electrons will fascinate towards itself.
The answer is C. Isotopes.
Isotopes are defined as two substances that have the same number of protons and electrons, but a different number of neutrons, and therefore a different atomic mass. For example, carbon-12 and carbon-14 are isotopes of each other.
Hope this helps!
