Which Is The Best Conclusion About Particles A And B?

Both particles are in the same atom. Which is the best conclusion about Particles A and B?

Particle A orbits the nucleus, and Particle B is located in the nucleus.

What is the most important particle in an atom and why?

I would say

proton and electron

are the two most important subatomic particles in an atom. The number of protons inside a nucleus must equal to the number of electrons outside of the nucleus. This number determines all the chemical properties of the atom, which governs the behaviors of all matters in our world.

Which statement best describes what Rutherford concluded from the motion of the particles quizlet?

Which statement best describes what Rutherford concluded from the motion of the particles?

Some particles traveled through empty spaces between atoms and some particles were deflected by electrons. Some particles traveled through empty parts of the atom and some particles were deflected by electrons.

How many electrons are in an uncharged chromium atom?

Which statement can be used to identify the element of an existing atom?

Atomic Number and Mass

The number of protons determines an

element's atomic number and is used to distinguish one element from another. The number of neutrons is variable, resulting in isotopes, which are different forms of the same atom that vary only in the number of neutrons they possess.

What is the smallest particle?

Quarks

are the smallest particles we have come across in our scientific endeavor. The Discovery of quarks meant that protons and neutrons weren't fundamental anymore.

Is a particle with no charge at all?

Neutron

, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10

^{− 27}

kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.

What is the basis for exceptions to the Aufbau diagram quizlet?

What is the basis for exceptions to the aufbau diagram?

Filled and half-filled energy sublevels are more stable than partially-filled energy sublevels

.

Which element is a main group metal with an even atomic number?

Which element is a main-group metal with an even atomic number? Main group elements are found in Groups 1A – 8A (1-2, 13-18). Elements in Groups 2A, 4A, 6A, and 8A (2, 14, 16, 18) have even atomic numbers.

Calcium

is in Group 2A (2) and is also a metal.

What can you assume has happened if an electron?

What can you assume has happened if an electron moves to a higher energy level?

The atom has become more stable

. The electron has lost energy. … The atom in the ground state has less energy and is less stable than the atom in an excited state.

Which element has an atomic number of 24?

How do you find the electrons?

The number of electrons in a neutral atom is equal to the number of protons

. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).

What is the nuclear symbol for Cr?

Chromium

is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard, and brittle transition metal.

What are the 2 main types of elements?

The elements can also be divided into two main groups,

the metals and the non-metals

. Metals are typically have a metallic sheen (shiny) are malleable (bendable) and conduct electricity. Nonmetals typically do not show these properties.

What are the 4 types of atoms?

• Description. Atoms are made of tiny particles called protons, neutrons and electrons. …
• Stable. Most atoms are stable. …
• Isotopes. Every atom is a chemical element, like hydrogen, iron or chlorine. …
• Radioactive. Some atoms have too many neutrons in the nucleus, which makes them unstable. …
• Ions. …
• Antimatter.