CHEM U5 TEST - PART 1

Front

The most stable electron configurations have __ valence electrons.

Back

8

Front

What is the Bohr model of an atom?

Back

A model that depicts electrons orbiting the nucleus in defined paths or shells.

Front

What block of the periodic table contains transition metals?

Back

d

Front

What block of the periodic table contains lanthanides and actinides?

Back

f

Front

What is the frequency conversion from Hz to MHz?

Back

1 MHz = 10^6 Hz.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with others.

Front

What is the electron configuration for Nickel (Ni)?

Back

[Ar] 3d^8 4s^2

Front

What are the main groups of the periodic table?

Back

s, p, d, f.

Front

How do you convert 5×10^13 Hz into MHz?

Back

5×10^13 Hz = 5×10^7 MHz.

Front

What is the role of the nucleus in an atom?

Back

The nucleus contains protons and neutrons and is the center of the atom.