Atomic structure and periodic table Questions Set 3

Which element has an atomic number of 19?

• chromium

• krypton

• phosphorus

• potassium

Tags

NGSS.MS-PS1-1

Which subatomic particle is found orbiting the nucleus of an atom?

• electron

• isotope

• neutron

• proton

Which separation method would be used to separate a solvent from a solution?

• chromatography

• crystallisation

• simple distillation

• filtration

How many electrons are there in an atom of silicon?

• 14

• 20

• 28

• 42

What name is given to the elements in Group 7 of the periodic table?

• alkali metals

• halogens

• noble gases

• transition metals

Which scientist left gaps for undiscovered elements when arranging their periodic table?

• Dmitri Mendeleev

• John Dalton

• John Newlands

• Niels Bohr

Which group of elements form positive ions when they react?

• alkali metals

• halogens

• noble gases

• none of the above

Which of the following elements is the most reactive?

• lithium

• potassium

• rubidium

• sodium

Which of these properties is not a characteristic of a typical non-metal?

• brittle

• low density

• good conductor of electricity

• dull

Which model of the atom was proposed by Ernest Rutherford in 1911?

• nuclear model

• planetary model

• plum pudding model

• solid sphere model