What does the following element description actually mean 18 O 6?
What does the following element description actually mean? 18. O. 6. a) 6 oxygen atoms with 18 neutrons.
What does the following element description actually mean hydrogen 2?
hydrogen-2. A hydrogen with one neutron and one proton.
What does the following element description actually mean 23892U?
What does the following element description actually mean? 23892U. A.a uranium atom with 92 protons and 146 neutrons.
What does the following element description actually mean iron 57 quizlet?
iron-57. iron with a mass number of 57. iron with a sum of the neutrons and the protons equal to 57.
Which of the following is true of oxygen that has 8 protons 8 neutrons and 8 electrons?
Which of the following is true of oxygen that has 8 protons, 8 neutrons, and 8 electrons? It has an atomic number of 8.
How many protons and electrons are present in O2 -?
All oxide anions, O2− , have 8 protons and 10 electrons.
Which of the following statements best describes an element?
The correct choice is A) a material consisting of only one type of atom. Elements are pure substances that cannot be broken down further by… See full answer below.
Which of the following describes a nonmetal?
Nonmetals- dull, brittle, unmalleable, poor conductor of thermal energy an electrical current, and are placed on the right side of the zigzag line.
What does the 4 in 42He represent?
Equations for Alpha Decay For example, an alpha particle (helium nucleus) is represented by the symbol 42He, where He is the chemical symbol for helium, the subscript 2 is the number of protons, and the superscript 4 is the mass number (2 protons + 2 neutrons).
What does the line in the following example actually represent H H?
Answer and Explanation: H-H is an example of a covalent bond between two hydrogens (H) atoms.
What element has 8 protons and why does it have 8 protons What would the element be if it had more or less neutrons or more or less electrons?
Scientists have found the relative abundance of each element and isotope, so we can look up how common an isotope is. For oxygen, the isotope with 8 protons and 8 neutrons makes up 99.7% of all oxygen atoms, so its a safe bet to say that oxygen almost always has 8 protons and 8 neutrons.
What differentiates the isotopes oxygen 16 oxygen 17 and oxygen-18?
Isotopes are elements that contain the same amount of protons, but differ in the number of neutrons in their nuclei. For example, there are three isotopes of the element oxygen (O): Oxygen 16, 17, and 18. Each isotope of oxygen contains 8 protons, but differs in the number of neutrons.
How many electrons are there in a neutral calcium atom calcium has an atomic number of 20?
Explanation: Calcium has an atomic number of 20 which means it would have 20 protons and 20 electrons in a neutral state as an atom.
How many valence electrons are in a neutral lithium?
one electron So, there is one electron in its outermost shell. We can understand from the above discussion that lithium as one electron in its valence shell which makes it valence electrons. Therefore, the correct answer is option (A) 1. NOTE: Lithium has only one electron in its outermost shell.
Which of the following properties describes an elements?
These properties include color, density, melting point, boiling point, and thermal and electrical conductivity. While some of these properties are due chiefly to the electronic structure of the element, others are more closely related to properties of the nucleus, e.g., mass number.
Which of these statements best describes an element quizlet?
Which of these statements best describes an element? An element is composed of identical atoms. What is the most accurate description of C6H12O6? C6H12O6 is a compound.
Which of the following describes the properties of a metal?
Metals- are shiny, ductile, malleable, good conductor of thermal energy and electrical current, and are placed on the left side of zigzag line. Nonmetals- dull, brittle, unmalleable, poor conductor of thermal energy an electrical current, and are placed on the right side of the zigzag line.
What does the 4 in He represent?
Answer and Explanation: The 4 in helium-4 represents the atomic mass of one atom of the helium-4 element. The mass number is equal to the total number of protons and neutrons…
What does the 218 in polonium 218 represent?
Terms in this set (24) What does the 218 in polonium-218 represent? an atom and the sum of the masses of its constituent particles.
What does the line in HH mean?
A covalent bond is drawn or represented in atomic and molecular diagrams using a short straight line. The uniting of two atoms of hydrogen in this way would be drawn H-H. Very frequently this is written H2.
What type of bond is H and I?
Polar Covalent Bonds
| Structural Unit1 | Bond Moments (D) |
|---|---|
| H—Cl | 1.1 |
| H—Br | 0.8 |
| H—I | 0.4 |
| C—C | 0.0 |
Which describes an atom that has fewer neutrons than protons and more electrons than protons?
An atom that has fewer neutrons than protons and more electrons than protons is a(n) ion.
How many electrons does an element have with a mass number of 36?
5 protons, 5 neutrons, 5 electrons Charge -1, 18 electrons, mass number 36.
Which particles affect each component of the atomic symbol and how the value of the numbers is determined?
Now the particle used to determine this is protons, the number of protons thus determining the element. Secondly, we have be now be symbol is generally used for net charge of the element. The net charge of the element is determined by the addition of the number of protons and electrons.
What happens to the electrons of a neutral calcium atom when its changed into a calcium ion?
What happens to the electrons of a neutral calcium atom (Ca) when it is changed into a calcium ion (Ca2+.) It becomes a positive ion because it loses two electrons.
How many neutrons are in the nucleus of an atom that has a atomic mass of 36 and an atomic number of 25?
How many neutrons are in the nucleus of an atom with an atomic number of 25 and a mass number of 36? so the no. of neutrons is 11.
How many protons are in an atom of bromine?
35Bromine / Atomic number
What do the elements in each column of the periodic table have in common?
Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements.
In which block of the periodic table is chromium Cr found?
| Chromium | |
|---|---|
| Atomic number (Z) | 24 |
| Group | group 6 |
| Period | period 4 |
| Block | d-block |
Which of the following statements best describes elements?
The correct choice is A) a material consisting of only one type of atom. Elements are pure substances that cannot be broken down further by… See full answer below.