4 In which atom is the number of protons equal to the number of neutrons? D A. $$ ^ { 4 0 } A r $$ B $$ ^ { 1 9 } F $$ C $$ ^ { 2 3 } N a $$ D. $$ ^ { 1 6 } O $$ 相关知识点: 试题来源: 解析 D ...
Which element has 16 neutrons, 15 protons, and 15 electrons? Which isotope is used for a standard for all other atomic masses? All the isotopes of a given atom have what? What is the noble gas configuration of Lawrencium? If an atom contains 14 protons, it is an atom of which element...
To calculate the binding energy per nucleon of the lithium isotope with an isotopic mass of 7.016 amu, we can follow these steps:Step 1: Identify the number of protons and neutrons in the lithium isotope. Lithium (Li) has an at
5 An atom Y has 17 protons and 18 neutrons.Which of the symbols represent the atom for Y element?Satu atom Y mempunyai 17 proton dan 18 neutron.Antara berikut yang manakah merupakan symbol mewakili atom bagi unsur Y? C1817A YB YT1835C D35Y Y1718 相关知识点: 试题来源: 解析 C ...
Which element has 3 protons? Which element has 27 protons? What is the most reactive metallic atom? Which chemical element has the electron configuration 2.8.3? What element is named after Dmitri Mendeleev? What is the electron configuration for an aluminum ion, Al3+?
Hydrogen atom does not have any neutron in the nucleus. This is because atomic number of H=1 , and mass number is also = 1. Therefore, number of neutrons = A-Z=1-1=0
Concept Introduction Atoms: Atoms consist of tiny particles called protons, neutrons and electrons. Proton and neutrons are present in the nucleus and the electron resides around the nucleus. The protons number will be same as the electrons count in the atom. The...
The next step was to recognize a connection between group properties (physical or chemical similarities) and atomic mass (the measured mass of an individual atom of an element). When the elements known at the time were ordered by increasing atomic mass, it was found that successive elements ...
Which subatomic particle has a relative mass of 1836 if the mass of an electron is 1? a. proton b. neutron c. electron Which of the following subatomic particles resides in the nucleus of an atom? a. protons and electrons b. protons and neutrons c. ...
The present invention relates to 2,2-dimethylchromene derivatives of the formula: ##STR1## in which Z represents a halogen atom or a cyano, nitro, acetyl, phosphono or dialkoxyphosohoryl group, the alkoxy group containing 1 to 3 carbon atoms, and the pharmaceutically acceptable salts of th...