# Strengthen Your Atomic Number Skills with Plainmath's Expert Help and Resource Collection

Recent questions in Atomic Number
Nuclear physicsAnswered question
Paloma Houston 2023-03-24

## A pulley system can lift a load of 1200 N by an effort of 250 N. If the resistance due to the weight of movable parts and friction is 300 N.Find the total number of pulleys in the system. A) 2B) 4C) 6D) 8

Nuclear physicsAnswered question
Leon Bishop 2023-03-21

## "Estimate the average mass density of asodium atom assuming its size to be about 2.5.(Use the known values of Avogadro's number and sodium's atomic mass.). Compare it with the density of sodium in its crystallinephase: 970 kg ${m}^{-3}$. Are the two densities of the sameorder of magnitude? If so, why?"

Nuclear physicsAnswered question
zatynlpv 2023-03-13

## Atomic number refers to the number of present in an atom. neutrons electrons protons

Nuclear physicsAnswered question
vitefraise0s2i 2023-02-20

## What is the mass number of an atom which contains 28 protons, 28 electrons, and 34 neutrons? A) 28B) 56C) 62D) 90

Nuclear physicsAnswered question
Cindy Hubbard 2023-02-15

## The first allowed excited state of a hydrogen atom is 10.2 eV above its lowest energy (ground) state. To what temperature should hydrogen gas be raised so that inelastic collisions may excite an appreciable number of atoms to their first excited state. A. $17.88×{10}^{4}K$ B. $7.88×{10}^{4}K$C. $157.88×{10}^{4}K$D. $237.88×{10}^{4}K$

Nuclear physicsAnswered question
msvicezhs 2023-01-06

## Potassium exits in mainly two isotopic form,39k and 41k and their abundance in nature are 93% and 7%. What is the average atomic mass of potassium.

Nuclear physicsAnswered question
Keely Rivers 2023-01-02

## The positively charged atom is known as a _______

Nuclear physicsAnswered question
Ross Colon 2022-12-30

## Gram Atomic mass is just the atomic mass expressed in grams ...ie, atomic mass with gram as units. One more information about it gram atomic mass and gram atom are the same thing. Later a formula is given that: Gram atom = mass in grams / Atomic mass [RAM]. There are questions also that use this formula in which we have to find the number of "gram atoms " in a given mass of substance. So what is the real meaning of gram atom and the formula?

Nuclear physicsAnswered question
prydlyfrl7w 2022-12-21

## A Atom has a nucleus which is surrounded by electrons and protons. A cell in a leaf also has a nucleus, so the nucleus in the leaf also has electrons and protons surrounding it?

Nuclear physicsAnswered question
vecauj7 2022-12-20

## $g\left(x\right)={\int }_{0}^{{2}^{x}}\mathrm{sin}\left({t}^{2}\right)\phantom{\rule{thinmathspace}{0ex}}dt$, g'(0)=

Nuclear physicsAnswered question
Tordellilgn 2022-12-19

## The electronic configuration of Neon is?

Nuclear physicsAnswered question
godeloula5ko 2022-12-19

## The quark epoch is when ________ was/were created.Select one:A. everything in normal atomsB. protons and neutrons that still surviveC. all known matterD. the rapid inflation of the cosmosE. only dark energyWhat key event took place during the atomic epoch?Select one:A. Atoms in the universe collected to form stars and galaxies.B. The universe expanded and cooled enough to allow the first particles to appear.C. The neutrinos were created.D. The universe underwent a brief period of rapid expansion.E. The universe expanded and cooled enough for electrons to orbit protons.

Nuclear physicsAnswered question
2selz76t 2022-12-17

## If a proton is accelerated from rest through a potential difference of 1250V find its approximate velocity at the end of this process.

Nuclear physicsAnswered question
Blake Booker 2022-12-16

## If, Thomson's atomic model is true, what would have been observed by Rutherford in his experiment?

Nuclear physicsAnswered question
Emenuele96j 2022-12-14

## What is the atomic mass of sodium?A. 22 uB. 23 uC. 11 uD. 20 u

Nuclear physicsAnswered question
nageljnovs6x 2022-12-13

## The number of protons in a lithium atom are A.3 B.2 C.4 D.8

Nuclear physicsAnswered question
privedbo48 2022-12-11

## Which subatomic particles have approximately the same mass?

Nuclear physicsAnswered question
Phoenix Wright 2022-12-07

## Which of the following statements is not true about an atom? A.All atoms can exist independently. B.Atoms are the basic unit from which molecules and ions are formed. C.Atoms are always neutral in nature. D.Atoms aggregate in large numbers to form the matter that we can see, feel or touch.

Nuclear physicsAnswered question
Arthur Mcfarland 2022-12-07

## The net charge of an atom is equal to zero. What does this indicate about the atom? Atoms are neutral Atoms have equal number of electrons and protons Atoms have zero mass Both A & B

Nuclear physicsAnswered question
erishita9od 2022-12-06

## Atomic number of calcium is 20. Calculate the number of electrons in calcium. __

Atomic number is an important concept in chemistry and physics. It represents the number of protons in an atom's nucleus. This number determines the element's identity and the number of electrons it has. Atomic numbers are part of the Periodic Table of Elements, and each element has a unique atomic number. Atomic numbers are also used to describe isotopes, which are atoms of the same element but have different numbers of neutrons. Knowing the atomic number of an element helps in understanding its chemical and physical properties. Atoms with the same atomic number but different numbers of neutrons are called isotopes, and they have different properties. Understanding atomic number is essential for understanding and mastering chemistry and physics.