Chemistry, 31.01.2020 01:59 alizeleach0123

Write a balanced nuclear reaction for the following:

216 po → 0 β +
84 -1
when balancing the nuclear reaction, explain the following:

how does the law of conservation of matter dictate what the daughter nuclide is?

how do we calculate the atomic mass and atomic number for the daughter nuclide?

where do we look up what the new daughter nuclide element is?

Answers: 1

Show answers

Answers

Answer from: 7obadiah

$\rm ^{216}_{\phantom{2}84}Po \to ^{\phantom{-}0}_{-1}\beta + ^{216}_{\phantom{2}85}At$ .

Both mass number (A) and atomic number (Z) shall conserve. Hence the mass number of the daughter nuclide shall be 216 and its atomic number be 85.

Let the mass number of the daughter nuclide be .

216 = 0 + A .

A = 216 .

Let the atomic number of the daughter nuclide be .

84 = (-1) + Z .

Z = 85 .

Look up the atomic number of the daughter nuclide in a modern periodic table. Alternatively, given that this reaction is a beta-minus decay, look for the element to the right of the parent nuclide.

Explanation:

Nuclides are made of neutrons and protons.

The atomic number (Z) is the number of protons in each of the nucleus. The mass number (A) is the number of protons plus neutrons in each of the nucleus.

The mass number shall thus be greater than or equal to the atomic number of a nucleus. However, note that occasionally the atomic number of electrons (beta-minus particles) is written as -1. The atomic number of positrons (beta-plus particles, the antiparticle of electrons) is written as +1. Beta particles do not contain protons or neutrons and might not satisfy rule $A \ge Z$ .

$^{A}_{Z}\mathrm{X}$ .

By convention

The mass number of a nucleus is written at the upper-left corner of the atomic symbol. The atomic number of a nucleus is written at the lower-left corner of the atomic symbol.

Both mass number and atomic number shall conserve in nuclear reactions. In other words, the sum of all mass numbers on the left-hand side of a nuclear equation shall be the same as the sum of all mass numbers on the right-hand side. So is the case with atomic numbers. For this nuclear equation,

Mass number on the left-hand side:

216 for $^{216}_{\phantom{2}84}\mathrm{Po}$ .

Mass numbers on the right-hand side:

0 for the beta-minus particle $^{\phantom{-}0}_{-1}\beta^{-}$ , andLet

be the mass number of the daughter nuclide $^{A}_{Z}\mathrm{X}$ .

Mass numbers conserve. Therefore,

216 = 0 + A .

A = 216 .

Similarly,

Atomic number on the left-hand side:

for $^{216}_{\phantom{2}84}\mathrm{Po}$ .

Atomic numbers on the right-hand side:

" for the beta-minus particle $^{\phantom{-}0}_{-1}\beta^{-}$ , andLet

be the atomic number of the daughter nuclide $^{A}_{Z}\mathrm{X}$ .

84 = (-1) + Z .

Z = 85 .

Refer to a modern periodic table. What is the element with the atomic number Z = 85 ? Astatine.

Alternatively, notice that the atomic number has increased by relative to the parent nuclide $\rm ^{216}_{\phantom{2}84}Po$ . Elements on a modern periodic table are order in the increasing order of atomic numbers. As a result, the daughter nuclide shall be on the right of the parent element.

Complete the atomic symbol of the daughter nuclide:

$\rm ^{216}_{\phantom{2}85}At$ .

Answer from: Quest

14 days is the half-life of phosphorus-32

Answer from: Quest

You know how the first one if filled up like the objects do the same but with the other categories

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 19:00, lizbeth232001

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.

Answers: 2

continue

Chemistry, 22.06.2019 07:00, shradhwaip2426

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

Answers: 3

continue

Chemistry, 22.06.2019 09:30, psychocatgirl1

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone, due to its high light availability and warm water temperature

Answers: 3

continue

Chemistry, 22.06.2019 21:00, cieswa46054

What four properties do all waves have in common

Answers: 2

continue

You know the right answer?

Write a balanced nuclear reaction for the following:

216 po → 0 β +
84 -1
whe...