Table of Contents
What is the atomic number of 24 protons and 24 electrons?
Chromium 54
Chromium 54: The atomic number Z = 24, so there are 24 protons and 24 electrons.
What element that has 24 electrons?
Chromium is a chemical element with the symbol Cr and atomic number 24.
What is the mass number of an atom that contains 24 protons 24 electrons and 26 neutrons?
The atomic mass of an atom that has 24 protons, 26 neutrons, and 24 electrons is 50 atomic mass units, abbreviated amu.
How did chromium get its name?
Origin of the name The name is derived from the Greek ‘chroma’, meaning colour.
How many neutrons are in an atom with a mass number of 28 and an atomic number of 14?
14 neutrons
The mass number is the number of protons plus neutrons, therefore 28 – 14 protons equal 14 neutrons.
What is the mass number of a nickel atom with 28 protons 31 neutrons and 28 electrons?
For mass number, you add (only) the protons and neutrons, so the answer here is 62.
Which element has a mass of 24?
Chromium
The elements of the periodic table sorted by atomic mass
| Atomic Mass | Name chemical element | number |
|---|---|---|
| 47.867 | Titanium | 22 |
| 50.9415 | Vanadium | 23 |
| 51.9961 | Chromium | 24 |
| 54.938 | Manganese | 25 |
What is the atomic number of an atom which contains 28 protons 28 electrons and 34 neutrons?
What is the mass number of the atom if it contains 28 protons 28 electrons and 34 neutrons?
1 Answer. For mass number, you add (only) the protons and neutrons, so the answer here is 62.
What is the mass number of atom which contains 28 protons 28 electrons and 34 neutrons?
Hence, the mass number of the given atom is 62.
How many neutrons there are in an atom of this metal if the mass number is 24?
They differ only because a 24Mg atom has 12 neutrons in its nucleus, a 25Mg atom has 13 neutrons, and a 26Mg has 14 neutrons.
What is the isotope notation of the element that has an atomic number of 24 and a mass number of 52?
52 24Cr
Chapter 4 Studyguide
| Question | Answer |
|---|---|
| Who proposed that everything was made of atoms? | Dalton |
| What is the isotope notation of the element that has an atomic number of 24 and a mass number of 52? | 52 24Cr |
| What part of the atom contains practically all of its mass? | the nucleus |
How do you find the mass number of protons neutrons and electrons?
To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number:
- number of protons = atomic number.
- number of electrons = atomic number.
- number of neutrons = mass number – atomic number.
Is carbon hard or soft?
Diamonds are made of carbon. They are among the hardest of materials and are used to cut glass and steel.
How many protons and electrons does an atom have?
No matter how many electrons or neutrons an atom has, the element is defined by its number of protons. In fact, it’s actually possible to have an atom consisting of only a proton (ionized hydrogen).
What is a neutral atom with the same number of protons?
A neutral atom has the same number of protons and electrons (charges cancel each other out). An ion has an unequal number of protons and electrons. If the charge is positive, there are more protons than electrons. If the charge is negative, electrons are in excess.
Does the number of neutrons in an ionic compound matter?
Neutrons do not have a net electric charge, so the number of neutrons does not matter in the calculation. The number of protons of an atom cannot change via any chemical reaction, so you add or subtract electrons to get the correct charge. If an ion has a 2+ charge, like Zn 2+, this means there are two more protons than electrons.
How do you find the number of protons and neutrons?
For hydrogen, the number of protons is 1. For zinc, the number of protons is 30. The element of an atom with 2 protons is always helium. If you are given the atomic weight of an atom, you need to subtract the number of neutrons to get the number of protons.