Where are non-metals found?

On the right of the table, and hydrogen at the top.

What is a metalloid? Give an example.

An element on the staircase line with properties between a metal and a non-metal, for example silicon.

What does the period number tell you?

The number of occupied electron shells.

Do metals tend to have few or many outer electrons?

Few (1 to 3). Non-metals tend to have more (4 to 7).

What did Mendeleev arrange the elements by?

Increasing atomic mass, with similar elements in the same column.

Why did Mendeleev leave gaps?

For elements that had not yet been discovered, whose properties he predicted.

Organisation of the periodic tableIB MYP Sciences: Flashcards

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What are the rows and columns of the periodic table called?

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What are the rows and columns of the periodic table called?: Rows are periods and columns are groups.
What is the periodic table arranged by today?: Increasing atomic number.
Where are metals found in the periodic table?: On the left and in the centre.
Where are non-metals found?: On the right of the table, and hydrogen at the top.
What is a metalloid? Give an example.: An element on the staircase line with properties between a metal and a non-metal, for example silicon.
What does the group number tell you?: The number of outer electrons.
What does the period number tell you?: The number of occupied electron shells.
In which group and period is 2,8,6?: Group 6, period 3 (sulfur).
Do metals tend to have few or many outer electrons?: Few (1 to 3). Non-metals tend to have more (4 to 7).
What did Mendeleev arrange the elements by?: Increasing atomic mass, with similar elements in the same column.
Why did Mendeleev leave gaps?: For elements that had not yet been discovered, whose properties he predicted.
Which element confirmed one of his predictions in 1886?: Germanium, below silicon.
What are the symbols for sodium, potassium and iron?: Na, K and Fe.
What are the symbols for copper, silver and gold?: Cu, Ag and Au.

Exam questions on Organisation of the periodic table

A school in Kuala Lumpur prints a large periodic table for its laboratory wall. Students use it to find the symbol, the group and the period of each element, and to decide whether an element is a metal, a non-metal or a metalloid.
Describe where metals and non-metals are found in the periodic table.2 marks
A student is making his own copy of the periodic table. He has a card for each element showing only its electron configuration, for example fluorine 2,7 and chlorine 2,8,7, and he places each card in the group and period that its electrons indicate.
Explain why fluorine and chlorine are placed in the same group but in different periods.2 marks
In 1869 Dmitri Mendeleev arranged the 63 elements known at the time in order of increasing atomic mass, but moved a few so that elements with similar properties fell in the same column. He also left gaps for elements that had not yet been discovered. He predicted that the missing element below silicon would have a relative atomic mass of about 72, a density of about 5.5 g/cm³, a grey colour and an oxide with the formula XO₂. In 1886 germanium was discovered. It has a relative atomic mass of 72.6, a density of 5.35 g/cm³, a grey colour and an oxide with the formula GeO₂.
Describe how Mendeleev organised his periodic table, and why he left gaps in it.3 marks

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Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).