The atomic mass unit (AMU or amu) of anelementis a measure of its atomicmass. Also known as thedalton(Da) orunified atomic mass unit(u), the AMU expresses both atomic masses and molecular masses. AMU is defined as one-twelfth the mass of anatomof carbon-12 (12C).12C is the most a...
What is the atomic mass of an element? What isotope has an atomic number of 76 and a mass number of 192? What does the atomic number describe? (a) a number of neutrons (b) atomic weight (c) number of protons (d) mass. The mass number of an element is 18. It contains 7 e...
Out of 200 neon atoms, 170 will be neon-20 (19.992 amu) and 30 will be neon-22 (21.991 amu). What is the average atomic mass of neon? What is the atomic mass of an element? What is the atomic mass of Silver (Ag)? What is the atomic mass number of carbon-12?
if 3.01x10的23次方 atoms of an elenment weigh 8g,what is the atomic weight of the element.相关知识点: 试题来源: 解析 An atomic weight (relative atomic mass) of an element from a specified source is the ratio of the average mass per atom of the element to 1/12 of the mass of an ...
What is the mass number for silicon? Mass Number: Mass number refers to an exact count of the protons and neutrons in the nucleus of an atom. Each isotope of an element will have a different mass number. The protons will always remain the same across the range of isotopes, but the numb...
解答一 举报 An atomic weight (relative atomic mass) of an element from a specified source is the ratio of the average mass per atom of the element to 1/12 of the mass of an atom of 12C.and NA=6.02*10^23therefore ... 解析看不懂?免费查看同类题视频解析查看解答 ...
1.how are the atomic numbers and the atomic masses of the elements related to how the elements are arranged on the periodic table?2.how does the number of electrons relate to the arrangement what is the different in the number of electrons in a 3rd period element and the 2nd period ...
Atomic Mass of Iron An element's atomic mass is equal to the sum of the individual particle masses of an atom. Atoms have three basic particles which include protons, neutrons, and electrons. The standard unit for measuring atomic mass is the Dalton (u). ...
The element with atomic number 84 and mass number 218 change to other element with atomic number 84 and mass number 214. The number ofαandβ-particles emitted are respectively: View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class ...
Atomic Number for any two different atoms is never same and hence can be used to distinguish two different atoms. Mass Number It is the sum of neutrons and protons of an atom present in nucleus. Mass Number for two different atoms can be same. The Atomic Mass of an atom is approximately...