All categories

2 years ago

The table gives information about four particles, a, b, c and d. complete the table.

Chemistry

1 answer:

kobusy [5.1K]2 years ago

7 0

The missing parts in the table is given below

Bi. Nucleon number => 23
Bii. Symbol => Na⁺
Ci. Number of electrons => 10
Cii. Nucleon number => 16
Di. Number of protons => 13
Dii. Number of neutrons => 15

<h3>Composition of atom</h3>

An atom is composed of a centrally placed nucleus (containing protons and neutrons) and a cloud of electrons revolving round it.

<h3>Relatioships</h3>

Mass number (number of nucleon) = Proton + Neutron

Charge = Proton – Electron

<h3>How to determine the missing part of particle B</h3>

i. Determination of the nucleon number

Proton = 11
Neutron = 12
Nucleon number =?

Nucleon number = Proton + Neutron

Nucleon number = 11 + 12

Nucleon number = 12

ii. Determination of the symbol

We'll begin by determining the charge of the particle. This is illustrated below:

Proton = 11
Electron = 10
Charge = ?

Charge = Proton – Electron

Charge = 11 – 10

Charge = +1

From the periodic table, the element with proton number of 11 is sodium, Na. Since the particle B has a charge of +1, the symbol of particle of B is Na⁺

<h3>How to determine the missing part of particle C</h3>

i. Determination of the number of electrons

Proton = 8
Charge = –2
Electron = ?

Charge = Proton – Electron

–2 = 8 – Electron

Collect like terms

–2 – 8 = – Electron

– 10 = – Electron

Electron = 10

ii. Determination of the nucleon number

Proton = 8
Neutron = 8
Nucleon number =?

Nucleon number = Proton + Neutron

Nucleon number = 8 + 8

Nucleon number = 16

<h3>How to determine the missing part of particle D</h3>

i. Determination of the number of protons

Electron = 10
Charge = +3
Proton = ?

Charge = Proton – Electron

3 = Proton – 10

Collect like terms

3 + 10 = Proton

Proton = 13

ii. Determination of the number of neutrons

Proton = 13
Nucleon number = 28
Neutron = ?

Nucleon number = Proton + Neutron

28 = 13 + Neutron

Collect like terms

28 – 13 = Neutron

Neutron = 15

Complete question

See attached photo

Learn more about composition of atoms:

brainly.com/question/886387

#SPJ1

You might be interested in

Why is potassium nitrate classified as an electrolyte?.

ch4aika [34]

Answer: It is a molecular compound. (2) It contains a metal. (3) It can conduct electricity as a solid.

5 0

3 years ago

Find the mass of each of these substances? 2.40 mol NaOH

damaskus [11]

Na = 23 x 2.40 = 55.2
O = 16 x 2.40 = 38.4
H = 1 x 2.40 = 2.40

55.2 + 38.4 + 2.4 = 96

2.40 mol of NaOH = 96 amu

4 0

4 years ago

This one two!!!!!!!lol

Rasek [7]

Answer:

Infrared thermography

Explanation:

Infrared thermography is equipment or method, which detects infrared energy emitted from object, converts it to temperature, and displays image of temperature distribution. ... We call our equipment as infrared thermography considering such generalization of the terminology.

6 0

3 years ago

In the city a street peddler offers you a diamond ring for 30 bucks how can you test the rock

larisa86 [58]

Explanation:

Hardness test — Scratch the rock with a fingernail, a copper penny, a glass plate or nail, and a ceramic plate. Check your Guide to assign it a rating on the Mohs Scale of Hardness.

Color streak test — Test for the “color streak” of the minerals by rubbing the rock across the ceramic plate in the Mineral Test Kit, or across smooth

cement. Look up which colors indicate which minerals are present.

Magnetism test — Hold the magnet in the Mineral Test Kit near your rock. If there is a magnetic pull, it has a metal mineral in it.

Acidity test — Put vinegar in the bottle included in the Mineral Test Kit. Squeeze out a few drops on the rock. If it fizzes, it contains carbonate.

A quick and easy way to find out whether your diamond is real or fake: try fogging it up with your breath. If it clears up after one or two seconds, then your diamond is real, but if it stays fogged for three to four seconds chances are that you're looking at a fake.

3 0

4 years ago

In which of the following sets are the charges given correctly for all the

Ronch [10]

Answer:

B) K⁺, Sr²⁺ , O²⁻

Explanation:

Potassium is present in group one. It is alkali metal and have one valance electron.Potassium need to lose its one valance electron and form cation to get complete octet.

That's why it shows K⁺.

Sr is alkaline earth metal. It is present in group two. It has two valance electrons. Strontium needed to lose its two valance electrons and get stable electronic configuration.

When it loses its two valance electrons it shows cation with charge of +2.

Sr²⁺

Oxygen is present in group 16. It has sex valance electrons. It needed two more electrons to complete the octet. That's why oxygen gain two electron and form anion with a charge of -2.

O²⁻

3 0

4 years ago