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Hiroshima and Nagasaki
The atomic mass of Be is 9,012 182.
a atmic sub is a nucler powerd sbmarine
It is the element Neon. It is a noble gas
atmic wt of 23
Yes, it is true, the number of protons is equal to atmic number.
The second nuclear bomb used in anger was dropped over Nagasaki on August 9th 1945.
It's "Atomic Bomb." anyways, An Atomic Bomb works by initiating a nuclear chain reaction, which releases a huge amount of energy relative to conventional explosives. Per unit volume, an atom bomb may be millions or billions of times more powerful than TNT.
This is not an atom, but a non-existing Carbon anion (-1, negatively charged)
the chemical composition of air 78% almost nitrogen 20% oxygen and other gases 1%app.among all 1% argon has comparetive higher molar mass so taking that only to get approx.result.taking 100 grm air no of mols nitrogen 5.5 diatomic gamma 1.4 oxygen .625 argon .05 mono atmic gamma 1.66 getting the ans by (total mols of air-1)/x =summation (moles of gas y-1)/gomma of that gas gas y is nitrogen oxygen & argon specific heat at cnst pressure =gamma.8.314)/gamma -1 ans 15.35 j/mol
There are many factors that go into how elements are arranged in the periodic table. The main factor is that they increase left to right by atomic number. Elements are also grouped by families (columns) and periods (rows). Elements of the same family have the same number of valence electrons and also will have similar properties. Certain families will thus bind well ith each other while others will not. Though not organized as so, atomic mass usually increases with atmic number, but there are some exceptions to this.
== == == == The screening effect, or shielding effect, is how electrons in the same atom interact with each other. In a single-electron atom (in isolation), the electron is only interacting with the proton; in a multielectron atom, the electrons are both interacting with the proton(s), but also with each other. While electrons are attracted to the protons in the nucleus, they are repelled by the other electrons. This electron-electron repulsion decreases the attractive force of the protons on the electrons.The shielding effect changes the effective nuclear charge -- effectively decreasing the true nuclear charge. This effect causes atoms to get smaller as you across a period (row) of the periodic table, as well as many other periodic trends observed in the periodic table.See the Web Links and Related Questions for more information about shielding and periodic trends.--------------------------------------------------------------------------- keep in mind that different orbitals have varying shielding effciencies depending on their shape and symmetry from greatest effect to least s>p>d>f and the effective nuclear charge can be estimated with good approx. by the Slater's Rule whereZ_eff=Z-S Z_eff= effective nuclear charge Z=nuclear charge S=screening (or shielding) factorthe screening factor is calculated by following the directions given at this websitehttp://intro.chem.okstate.edu/WorkshopFolder/SlaterRule.html