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ScienceHard
Chemistry
Elements Compounds

What is the atomic number of an element that would be placed below Fluorine in the same group?

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ScienceHard
Chemistry
Elements Compounds

Which property decreases down the group for halogens?

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ScienceHard
Chemistry
Elements Compounds

An element with atomic number 38 belongs to which group?

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ScienceHard
Chemistry
Elements Compounds

Which of these pairs are isobars?

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ScienceHard
Chemistry
Elements Compounds

The energy required to remove an electron from an isolated gaseous atom is:

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ScienceHard
Chemistry
Elements Compounds

Which element has the highest electron affinity in the periodic table?

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ScienceHard
Chemistry
Elements Compounds

Which block of the periodic table contains the transition elements?

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ScienceHard
Chemistry
Elements Compounds

What is the maximum number of electrons in the 3d subshell?

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ScienceHard
Chemistry
Elements Compounds

Which of these elements has the largest atomic radius?

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ScienceHard
Chemistry
Elements Compounds

What is the correct subshell electronic configuration for Copper (At. No. 29)?

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ScienceHard
Chemistry
Elements Compounds

Which period contains only 2 elements?

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ScienceHard
Chemistry
Elements Compounds

The number of electrons in the p-orbital of a Nitrogen atom (At. No. 7) is:

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ScienceHard
Chemistry
Elements Compounds

Identify the non-metal that is solid at room temperature and has a shiny appearance like metals.

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ScienceHard
Chemistry
Elements Compounds

In the modern periodic table, properties of elements are periodic functions of their:

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ScienceHard
Chemistry
Elements Compounds

Which element has the highest valency among the following?

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ScienceHard
Chemistry
Elements Compounds

What is the Latin name for Antimony?

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ScienceHard
Chemistry
Elements Compounds

Which element is the most abundant in the Earth's crust?

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ScienceHard
Chemistry
Elements Compounds

How many elements are present in the 4th period of the modern periodic table?

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ScienceHard
Chemistry
Elements Compounds

Which element has the electron configuration $1s^2 2s^2 2p^6 3s^1$?

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ScienceHard
Chemistry
Elements Compounds

Isotopes of which element are used in the treatment of cancer?

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