The Atomic Number and the Synthesis of New Elements

Who was the scientist who arranged the elements according to a group of three?

• John Dalton

• Johann Wolfgang Dobereneir

• Dmitri Inovich Mendeleev

• John Alexander Newlands

How many electrons do all the elements belonging in Group II A have in their outermost shell?

• 1

• 2

• 3

• 4

What do you call the vertical column of the periodic table?

• a period

• a row

• a group

• none of these

Which family of elements includes helium and neon?

• Noble gases

• Alkali metals

• Halogens

• None of these

How many electrons are there in an atom of an element in Period 4 group VII A?

• Four

• Five

• Six

• Seven

What do you call the number of positively charged particles in an atom?

• Atomic number

• Mass number

• Atomic weight

• Atomic mass

Who proved that the atomic number determines the major properties of an element?

• Ernest Walton

• Ernest Rutherford

• Henry Gwyn-Jefferys Moseley

• James Chadwick

What was the method used by Moseley in determining the atomic number of elements?

• Mass Spectrometry

• X-ray Spectroscopy

• NMR Spectroscopy

• UV Spectroscopy

Which nuclear process occurs in the collisions of target nuclei with a beam of particles with high energy?

• Nuclear fusion reaction

• Nuclear fission reaction

• Nuclear transmutation

• Nuclear decay reaction

What atomic numbers corresponded to the four gaps in the periodic table arranged by Moseley?

• 43,62,83, and 85

• 43,61,85,and 87

• 40,60,80, and 85

• 43,65,85, and 87