Atomic Theory
Atomic Number & Mass Number
Isotopes & Atomic Mass
Groups & Periods
Periodic Trends
100

Which atomic particles are around the nucleus within an atom?

Electrons

100

It indicates the number of protons inside an atom

Atomic Number

100

Triple Points!!!

If Hg atomic number is 80, how many protons does the Isotope Hg-201 have?

80

100

How are called the vertical columns in the periodic table?

Groups

100

Arrange the next elements from the most to the least electronegative: Bromine, Fluorine, Iodine, Chlorine

F, Cl, Br, I

200

Which atomic particles form the nucleus within an atom?

Protons and Neutrons

200

Triple Points!!!

It indicates the sum of protons and neutrons inside an atom

Mass Number

200

If Mg atomic number is 12, how many electrons does the Isotope Mg-26 have?

12

200

Double Points!!!

How are called the horizontal rows in the periodic table?

Periods

200

Arrange the next elements from the one with the lowest to the highest ionization energy: Strontium, Beryllium, Calcium, Magnesium

Sr, Ca, Mg, Be

300

Double Points!!!

Who was the scientist that confirmed Democritus atomic model?

John Dalton

300

If an atom of Chlorine (Cl) has 17 protons and 20 neutrons, what is its mass number?

37

300

If I atomic number is 53, how many neutrons does the Isotope I-127 have?

74

300

What's the name of the Russian chemist who first arrange the elements in a periodic table?

Dmitri Mendeleev

300

Arrange the next elements from the one with biggest to the smallest atomic radius: Sodium, Hydrogen, Potassium, Lithium, Rubidium

Rb, K, Na, Li, H

400

Who was the first scientist to discover the existence of the nucleus inside the atom?

Ernest Rutherford

400

If an atom of Nickel (Ni) has an atomic number of 28 and a mass number of 59, how many neutrons does it have?

31

400

Silver (Ag) has two naturally occurring isotopes: Ag-107 (51.84%) and Ag-109 (48.16%). What is Silver atomic mass?

107.96 amu

400

How many periods are there in the periodic table?

7

400

Double Points!!!

Arrange the next elements from the least to the most electronegative: Chromium, Zinc, Calcium, Bromine, Nickel, Iron

Ca, Cr, Fe, Ni, Zn, Br

500

Who was the first scientist that stated electrons moved around the nucleus in orbits of fixed sizes and energies?

Niels Bohr

500

If an atom of Platinum (Pt) has an atomic number of 78 and a mass number of 195, how many neutrons does it have?

117

500

Strontium (Sr) has four naturally occurring isotopes: Sr-84 (0.56%), Sr-86 (9.86%), Sr-87 (7.00%) and Sr-88 (82.58%). What is Strontium atomic mass?

87.71 amu

500

How many groups are there in the periodic table?

16

500

Arrange the next elements from the one with the highest to the lowest ionization energy: Sulfur, Silicon, Sodium, Aluminum, Magnesium, Chlorine, Phosphorus

Cl, S, P, Si, Al, Mg, Na

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