Subatomic particles
These are found on the left of the staircase line on the periodic table
What are the metals
How do you find the number of electrons and protons for a neutral element?
What is the atomic number
What is the trend for atomic radius?
decreases across and increases down
List 3 properties of metals
Luster, ductile, malleable, conductive
An atom with 10 protons, 11 neutrons, and 12 electrons has a mass number of:
21
If i have 20 electrons and am a neutral atom what element am I?
What is Calcium.
What is ionization energy? (definition)
The energy required to remove an electron.
This subatomic particle has almost no mass
What is the electron
Give the name of the elements on the staircase line AND one property
metalloids and semiconductors
What is the average atomic mass of an element that is 69.17% 64X and 30.83% 66X and 0.002% 68X? (Show work)
64.62 amu
I am in the alkali metals in the second period. Who am I?
What is lithium
S
These two subatomic particles are found inside the nucleus
proton and neutron
The elements on the periodic table are arranged according to the number of ____________ in the element
What is the protons
Neon has two common isotopes: Neon-20 and Neon-21. Which isotope is likely more abundantly found in nature and why?
Neon-20, the average atomic mass of neon is closer to 20 than 21.
How many neutrons does Argon-40 have?
What is 22
Which group has no electronegativity? Explain why
Noble gases - they have no attraction for electrons
Most of the volume of an atom is made up of:
What is empty space?
What are the names of groups 1, 2, 17, and 18?
What are alkali metals, alkaline earth metals, halogens, and noble gases?
1. What element is it?
2. What is its charge?
3. Is it a cation or anion?
Aluminum, +3, cation
What is the most notable property of the noble gases?
Nonreactive
Explain WHY bromine is larger than chlorine.
Bromine has more electrons shells.