Q.5) a) Show diagrammatically the electron distribution and the composition of the nucleus of a Sodium atom.
b) in the following table the mass no, and the atomic no. of certain elements are given:
B
C
E
F.
ELEMENTS
MASS NO. 2
ATOMIC NO. 1
3
0 m
4
2
31
15
19
13
11
Now answer the following: -
How many neutrons are there in an atom of F?
ii) State the valency/ valency's of E
Name two atoms which are isotopes.
iv) Name the noble gas
(5 marks)​

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.