Atomic Structure/Nuclear/Periodic Table

The Atom

100

These two particles contribute to the mass of the atom.

Protons and neutrons

200

The elements on the periodic table are arranged by ______________ also representing the number of protons.

Atomic Number

300

Where are electrons found in the atom and is it positive, negative, or neutral?

Electron cloud, negative

400

Is the nucleus positively charged, negatively charged or neutral? Why?

Positive because of protons in the nucleus

500

What would cause two elements to react similarly in terms of their subatomic particles?

Same number of valence electrons

Protons, Neutrons, Electrons

100

How many protons in strontium?

38

200

How many electrons are in a neutral magnesium atom?

12

300

How many neutrons in potassium?

39-19 = 20

400

How many neutrons in ³⁷Cl?

37-17 = 20 neutrons

500

How many protons, neutrons, and electrons in ⁶⁰₂₇Co²⁺

27 protons

60-27 = 33 neutrons

25 electrons

Random Nuclear

100

What part of the atom is split during a fission reaction?

Nucleus

200

What type of radiation has a charge of +1 and a mass of 0?

B+ or positron

300

What type of decay does francium-220 undergo?

Alpha

400

What isotope is used in nuclear bombs and nuclear power plants?

U-235

500

What is wrong with the nuclear equation below?

⁹⁰₃₈Sr -->⁰_-1e + ⁹⁰₃₇Rb

The atomic numbers on the left and right side of the arrows are not equal. Should be ⁹⁰₃₉Y as a product instead.

Nuclear Equations

100

Complete the nuclear equation:

²³⁹₉₄Pu --> ⁴₂He + ?

²³⁵₉₂U

200

Complete the nuclear equation:

⁸⁵Kr --> ⁰_-1e + ?

⁸⁵₃₇Rb

300

Write the full decay equation for Calcium-37

³⁷₂₀Ca --> ⁰₊₁e + ³⁷₁₉K

400

Write the full decay equation for Tc-99

⁹⁹₄₃Tc --> ⁰_-1e + ⁹⁹₄₄Ru

500

Complete the nuclear decay equation:

²³⁵₉₂U + ¹₀n --> 3 ¹₀n + ¹⁴⁴₅₆Ba +?

⁸⁹₃₆Kr

Periodic Table

100

How many valence electrons does oxygen have?

6

200

Pick an element that is unreactive and state why it is unreactive.

He, Ne, Ar, Kr, Xe, or Rn - because they have full valence shells of (8 electrons - 2 if He)

300

From Group 15, pick one metal, one nonmetal, and one metalloid and label them.

Metal = Bi

Nonmetal = N or P

Metalloid = As or Sb

400

Pick an element that has similar reactivity to magnesium. Why do they have similar reactivity?

Be, Ca, Sr, Ba, or Ra because they have the same number of valence electrons (2).

500

What do elements in the same period have in common?

Same number of electron energy levels. (Example: period/row 3 have 3 energy levels)