In: Chemistry

Put the elements 14 N, 16 O, and 40Ar in order of increasing nuclear stability and justify your answer mathematically.

please show all work, units, and equations!

The stability of an isotope is identified on the concept of
Nuclear Stability . It mainly depends on the two factors i.e. the
neutron/proton ratio and the total number of nucleons in the
nucleus. However, every element has a proton, neutron, and
electron. In addition, the number of protons is equal to the atomic
number, and the number of electrons is equal the protons, unless it
is an ion. In order to determine the number of neutrons in an
element you subtract the atomic number from the atomic mass of the
element. Here, atomic mass is represented as (*A*) and
atomic number is represented as (*Z*) and neutrons are
represented as (*N*).

Then, A = N + Z or N= A-Z

For 14 N, A= 14 and Z= 7

Then, N=14-7= 7

The N:P ratio therefore is 7:7 or a 1:1. This is a stable ratio that lies on the Belt of Stability.

For 16 O: A=16 and Z=8

Then, N=16-8=8

The N:P ratio therefore is 8:8 or a 1:1. This is also a stable ratio that lies on the Belt of Stability. Also it satisfies Magic Number.

For 40 Ar: A=40 and Z=18

Then, N=40-18=22

The N:P ratio therefore is 22:18 or a 1.2:1. This is also a stable ratio that lies on the Belt of Stability.

Thus, Orderd of Nuclear stability is 16 O > 14 N > 40 Ar

The 16O contains 8 protons and 8 neutrons (even-even)

Part A
Arrange the elements in order of increasing first ionization
energy: Si, F, Sn, O.
Rank elements from smallest to largest. To rank items as
equivalent, overlap them.
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Si
F
Sn
O
Smallest
Largest
The correct ranking cannot be determined.
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Part B
Arrange the isoelectronic series in order of decreasing radius:
Cl−, K+, S2−, Ca2+.
Rank ions from largest to smallest. To rank items as equivalent,
overlap them.
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Reset
K+
Ca2+
S2−
Cl−...

Arrange the following in the order of their increasing
effective nuclear charge, increasing ionization potential and
increasing size. Give appropriate reasons to support your
arrangement. (X is an element)
X, X−,
X2−, X+,
X2+
You have two reactions associated with the elements X and
Y:
X(g) + e →
X−(g)…..(i)
Y(g) + e →
Y−(g)…..(ii)
A certain amount of energy is released
in both reactions. If addition of an electron to the valence shell
of Y(g) was easier than to...

Arrange elements according to electronegativity
N, Ga, K, Cs, O

Write the molecular formula for a compound with the possible
elements C, H, N and O that exhibits a molecular ion at
M+ =128.063.
Exact Masses of the Most Abundant Isotope of Selected
Elements
Isotope
Natural abundance
(%)
Exact mass
1H
99.985
1.008
12C
98.90
12.000
14N
99.63
14.003
16O
99.76
15.995
Molecular formula (In the order CHNO, with no
subscripts)

Which set of elements is arranged in order of increasing
electronegativity?
a)Al < B < C < N
b)C < N < B < Al
c)B < N < Al < C
d)N < C < B < Al
Which pair of atoms forms the most polar bond?
a)Si and F;
b)Si and Cl;
c)P and Cl;
d)P and F
Determine the bond type between each of the following pairs.
a) H and H; b) N and O; c) C...

An array A[0..n - 2] contains n-1 integers from 1 to n in
increasing order. (Thus one integer in this range is missing.)
Design an algorithm in (Theta(log n)) to find the missing integer.
Your algorithm should be given in pseudo code. For
example, the array A could be {1, 2, 3, 4, 6, 7, 8, 9, 10} in which
5 is missing.

Arrange the following elements in order of increasing metallic
character: Ra, Sn, In, S, Ba, As. Rank elements from least to most
metallic character.

1)Order the elements S, Cl, and F in terms of increasing atomic
radii. The smallest is on the left side and the largest is on the
right side.
a. S, F, Cl
b. S, Cl, F
c. Cl, F, S
d. F, Cl, S
e. F, S, Cl
2)Which of the following lists of atoms are arranged in order of
DECREASING atomic radius? The largest diameter atom is on the left
and the smallest diameter atom is on the right...

Suppose that we performed the algorithm SELECT whose running
time is O(n) on 133 elements, and found the median of medians x by
making groups of 5 elements. What is the maximum number of elements
which are guaranteed to be greater than equals to x (without
counting x, itself)?

Put the following liquids in order of increasing viscosity
(smallest to largest).
-1.2.3.4.
CH3CH2CH2CH2CH3
-1.2.3.4.
HOCH2CH2CH2CH2CH2OH
-1.2.3.4.
CH3CH2CH2CH2CH2OH
-1.2.3.4.
CH3CH2CH2CH3

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