Periodic table - yr 10 chem

How are elements arranged in the periodic table?

Increasing atomic number

What are the rows referred to as in the periodic table?

Periods

What are the columns referred to as in the periodic table?

Groups

What does the atomic number represent?

The number of protons in the nucleus

What does the mass number represent?

The number of protons and neutrons in the nucleus

What element has 26 electrons, 29 neutrons, and 26 protons?

Iron

What element has 23 protons?

Vanadium

What element has 0 neutrons?

Hydrogen

What is the charge of an electron?

Negative

Where in the atom is the proton found?

Inside the nucleus

What is the maximum number of electrons in the first shell?

2 electrons

If you know the number of protons, can you always determine the element?

YES

If you know the number of neutrons, can you determine the element?

NO

What are group 1 elements called?

Alkali metals

What are group 2 elements called?

Alkali earth metals

What are group 17 elements called?

Halogens

What are group 18 elements called?

Noble gases

What elements can be found in the d block?

Transition metals

List two properties of group 8 elements.

Unreactive and gas

What is the electron configuration of carbon?

2, 4

What is the valency of magnesium?

2

What rule describes how many electrons each shell can hold?

2n²

What describes the metallic character across a period from left to right?

Metallic character decreases

What characteristic do metallic oxides have?

Basic

What is the trend in atomic radius across period 3?

The atomic radius decreases.

What defines the reactivity of group I metals in water?

They react violently as they have 1 electron in their valence shell.