Electron Domains
Pairs
Pair
Pairs
Pairs
1
2
Linear
Geometry:
Angles:
180°:
3
os
Geometry Trigonal Planar
Angles: 120°:
Bent
-120°
4
bent
Geometry:
Angles
Tetrahedral
109.59
Trigonal-pyramid
-109.59
-109.50
5
oko
Trigonal
Bipyramidal
909, 120°
See-saw
Geometry
Angles:
Linear
T-shaped
90°
900, 120
180°
o
Octahedral
Geometry
Angles:
Square-pyramid
90°
Square-planar
90°
90°

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.

hypostyle hall;