9- Electrons in Atoms and the Periodic Table

Front

What is the number of protons that the element in this image contain? Options: 14, 7, 15, 18

Back

7

Front

Beryllium has how many protons?

Back

4

Front

What element is this? Options: Helium, Hydrogen, Argon, Silver

Back

Argon

Front

What does an atom's period tell us?

Back

Number of shells

Front

What does an atom's group tell us?

Back

Number of valence electrons

Front

Element in period 3 classified as a metal: Boron (B), Sodium (Na), Argon (Ar), Silicon (Si)

Back

Sodium (Na)

Front

Electromagnetic waves vary in:

Back

wavelength and frequency.

Front

An electromagnetic wave in a vacuum has a wavelength of 0.07m. What is its frequency?

Back

f=4.3x 10^9Hz

Front

How does light act?

Back

Both a wave and a particle

Front

A wave with a large wavelength will have a ______ frequency and _____ energy.

Back

low, low