Recent questions in Atomic Number

+306 votes

0 answers

What are the atomic numbers of the first 25 elements of the periodic table?

asked Jun 20, 2022 in Atomic Number by BDY62

+27 votes

0 answers

What is the most important property for identifying an element: atomic weight or atomic number? Why?

asked Jun 20, 2022 in Atomic Number by kidspud

+205 votes

0 answers

Why do we need to know the atomic mass, atomic number, no. of electrons, protons, and neutrons of an atom?

asked Jun 19, 2022 in Atomic Number by useremoved

+12 votes

0 answers

How many protons, electrons and neutrons are in a neutral atom which has an atomic number of 8 and a mass number of 17?

asked Jun 19, 2022 in Atomic Number by bobbie-dazzler

+281 votes

0 answers

Is the discovery of the atomic number by Henry Moseley important? Why or why not?

asked Jun 19, 2022 in Atomic Number by Philt2012

+246 votes

0 answers

How were atoms discovered?

asked Jun 19, 2022 in Atomic Number by perceivecoach

+5 votes

0 answers

The silvery-white metallic element with the atomic number 32 is a key component of fibre-optics and other electronic systems. It was discovered in 1886 by the chemist Clemens Winkler and given which name, after his home country?

asked Jun 19, 2022 in Atomic Number by cappi

+27 votes

0 answers

How do you balance the nuclear equation by giving the mass number, atomic number, and element symbol for the missing species, Al27+He4⟶ ______+0/1 n?

asked Jun 19, 2022 in Atomic Number by J Newbie

+21 votes

0 answers

What is the number of neutrons in an element that has an atomic number of 8 and a mass number of 17?

asked Jun 18, 2022 in Atomic Number by countdown

+7 votes

0 answers

Tin has a value of 10, which is the highest of all elements. Technetium and promethium are the only elements with an atomic number 82 or less that have a value of 0. What does this number measure?

asked Jun 18, 2022 in Atomic Number by SolarisTwilight

0 votes

0 answers

Which element, with the atomic number 53, exists naturally as a purple-black solid that can become a violet-pink gas?

asked Jun 17, 2022 in Atomic Number by J.P.

+272 votes

0 answers

What can be determined if only the atomic number of an atom is known?

asked Jun 16, 2022 in Atomic Number by Pollowick

+8 votes

0 answers

Just as there are Magic Numbers in nuclear physics, are there also "Forbidden Numbers" as well? For example, not a single isotope with mass numbers of 5 or 8 are stable, and in fact have incredibly short half-lives.

asked Jun 16, 2022 in Atomic Number by mike4369

+89 votes

0 answers

How often does the atomic clock send a signal?

asked Jun 16, 2022 in Atomic Number by MysticHorizon

+13 votes

0 answers

Why does argon have a lower atomic number but a greater mass number compared to potassium?

asked Jun 16, 2022 in Atomic Number by Samer9988

+14 votes

0 answers

Can you explain why the atomic number increases for each element, but the mass of an atom decrease as we move down a group on the periodic table?

asked Jun 16, 2022 in Atomic Number by HEYHOLETSGO (3.0k points)

+240 votes

0 answers

Why do we use “O” instead of “zero” as the symbol for oxygen (atomic number eight)?

asked Jun 16, 2022 in Atomic Number by andyz

+152 votes

0 answers

Which element has the atomic number 92 and atomic mass of 238?

asked Jun 15, 2022 in Atomic Number by Destech

+8 votes

0 answers

What is the position of the element in the periodic table with the atomic number 34?

asked Jun 14, 2022 in Atomic Number by SolarisTwilight (2.2k points)

+23 votes

0 answers

How do you determine the number of atoms in a compound?

asked Jun 14, 2022 in Atomic Number by Pclarke17

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