more than 99 percent of the mass is contained in the nucleus; therefore, nearly half of the mass of the atom is made up of protons. The mass of a
What is the main component of the atomic mass in English? A. Protons B. Electrons C. Neutrons D. Protons and neutrons 相关知识点: 试题来源: 解析 D。本题考查原子质量的主要组成部分。质子和中子的质量较大,是原子质量的主要构成部分,电子质量很小可忽略。选项 A 仅提到质子,不全面。选项 B 电子...
The mass number of an atom is the total number of protons and neutrons contained within the nucleus of the atom. The number of protons determines the element and will always equal the atomic number of that element. The number of neutrons can change and will determine which isotope of that...
An ion has a charge of -1, has 17 protons and 17 neutrons. What is it's mass number (A)? What element has 36 neutrons and a mass number of 65? How many protons and electrons does it have if it has a charge of +1? What is the mass number of...
Mass Number: A mass number is a total count of all the protons and neutrons in the nucleus of an atom. Protons are the positively charged particles in the nucleus while the neutrons have a neutral charge. Each particle has a mass count of one. ...
element in theperiodic tableconsists of atoms, and each atom has a unique atomic mass and unique atomic number. The atomic number refers to the number of protons in the atom's nucleus, while atomic mass reflects the sum of the number of protons and neutrons. It is expressed in AMU or ...
Since the atomic mass of Sodium is 23, we can also write it as 23 g/mol.Therefore, we conclude that Option B is the correct answer.Additional Information:The atomic number of a chemical element is the number of protons found in the nucleus of every atom...
What is the chemical element titanium? What is the atomic mass of californium? How many atoms of titanium are in 27.9 grams of titanium? What is the atomic mass of iron? What is the atomic mass of silver? What is the atomic mass of berkelium?
Atomic mass is expressed in atomic mass units (amu) for a single atom and in grams per mole for macroscopic quantities. A mole is quantified as Avogadro's number (6.02 × 1023) of atoms. An atom of a given element always has the same number of protons. If it had a different number,...
ICSEC - Grade 09 - CHEMISTRY - Atomic Structure And Chemical Bonding - Q23