What does the following element description actually mean iron 57 What does the following element description actually mean iron 57?
What does the following element description actually mean? iron-57. iron with a mass number of 57. iron with a sum of the neutrons and the protons equal to 57.
What does the following element description actually mean 186O?
What does the following element description actually mean? 186O. an oxygen atom with 6 protons and 12 neutrons.
What does the following element description actually mean hydrogen 2 What does the following element description actually mean hydrogen 2?
hydrogen-2. a hydrogen with one neutron and one proton.
Which is the correct description of an element?
For example all carbon atoms contain 6 protons in their atomic nucleus so the atomic number of carbon is 6. Carbon atoms may have different numbers of neutrons atoms of the same element having different numbers of neutrons are known as isotopes of the element.
What does the following element description actually mean iron 57 quizlet?
the sum of the protons and the neutrons. What does the following element description actually mean? 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 statements describes the isotopes of an atom?
Explanation: In the field of chemistry isotopes can be described as elements that have the same atomic number but different mass number. As the atomic number is same these elements have the same position on the periodic table. Isotopes differ from each other because their nucleon number or mass number is different.
Where is cesium found in nature?
Caesium is found in the minerals pollucite and lepidolite. Pollucite is found in great quantities at Bernic Lake Manitoba Canada and in the USA and from this source the element can be prepared.
Does it make sense to say that a textbook is 99.9% empty space?
Does it make sense to say that a textbook is about 99.9 percent empty space? Yes. A textbook like all material things is made up of atoms which are considered to be 99.9 percent empty space. … The atomic masses are average atomic masses.
What element has a symbol of RN?
radon (Rn) chemical element a heavy radioactive gas of Group 18 (noble gases) of the periodic table generated by the radioactive decay of radium. (Radon was originally called radium emanation.)
Which of the following does not describe an isotope?
The option that does not match the characteristics of an isotope is: isotopes are the atoms of different elements. Isotopes are the two or more forms of the same element that differ in the number of neutrons but the number of protons and electrons remain the same.
Which of the following elements will have the lowest atomic mass?
Which of the following statements best describes the role of neutrons in the nucleus quizlet?
Which of the following statements best describes the role of neutrons in the nucleus? The neutrons stabilize the nucleus by attracting protons and other neutrons.
What does elemental mean in chemistry?
(Entry 1 of 2) 1a : of relating to or being an element specifically : existing as an uncombined chemical element. b(1) : of relating to or being the basic or essential constituent of something : fundamental elemental biological needs.
What is the meaning of element in science?
chemical element also called element any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.
What are elements give 5 examples?
Carbon oxygen hydrogen gold silver and iron are examples of elements.
What does the atomic number of an element Tell us about that element?
The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e. an element with 6 protons is a carbon atom no matter how many neutrons may be present).
Which of the following statement describe neutron?
A neutron is a subatomic particle found in the nucleus of every atom except that of simple hydrogen. The particle derives its name from the fact that it has no electrical charge it is neutral. Neutrons are extremely dense. … The number of proton in an element’s nucleus is called the atomic number.
What is the mass number of an atom with 15 protons and 16 neutrons?
Phosphorus has 15 protons and 16 neutrons in its nucleus giving it an atomic number of 15 and a atomic mass of 31.
Which statement best describes an isotope of an element?
Which of the following best describes an isotope? Structurally variant atoms which have the same number of protons (and electrons) but differ in the number of neutrons they contain.
Which of the following statements best describes the difference between an element and an isotope?
An element has a particular number of protons and neutrons while an isotope has a particular number of protons and a varying number of neutrons.
Which statement correctly describes isotopes?
Is Caesium flammable?
* Cesium is a FLAMMABLE LIQUID or SOLID which MAY IGNITE SPONTANEOUSLY IN AIR.
How do you speak cesium?
Is cesium alpha beta or gamma?
Cesium-137 emits beta particles as it decays to the barium isotope Ba-137m (half life = 2.6 minutes). How are people exposed to cesium-137? People may be exposed externally to gamma radiation emitted by cesium-137 decay products. If very high doses are received skin burns can result.
Why can’t I walk through walls?
What if the universe is an atom?
Are humans made up of energy?
What element symbol is RA?
radium (Ra) radioactive chemical element the heaviest of the alkaline-earth metals of Group 2 (IIa) of the periodic table.
Which of the following is an element *?
Answer: oxygen is an element.it consist of oxygen atoms only.
What periodic element is RB?
rubidium (Rb) chemical element of Group 1 (Ia) in the periodic table the alkali metal group. Rubidium is the second most reactive metal and is very soft with a silvery-white lustre.
Do all elements have isotopes?
What is the main difference among the isotopes of the same element?
Basic principles. Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons. The difference in the number of neutrons between the various isotopes of an element means that the various isotopes have different masses.
How do you identify isotopes?
Isotopes are identified by their mass which is the total number of protons and neutrons. There are two ways that isotopes are generally written. They both use the mass of the atom where mass = (number of protons) + (number of neutrons).
What is the first metal on the periodic table?
Group 1A — The Alkali Metals.
How to find the Protons Neutrons and Electrons of an element on the Periodic table
English 5 Q4 Week 1 Analyzing How Visual Elements Contribute to the Meaning of Text
What Is Nothing?
I’m Too Thin i can almost fly