Which of the following Group 15 elements has the most metallic properties

Pure silicon is chemically classified as a semi-metal because silicon

The observed regularities in the properties of elements are periodic functions of their

Elements in the Periodic Table are arranged according to their

In which set do the elements exhibit the most similar chemical properties

The atomic number of an atom is determined by the number of

Of the following, the group that contains elements that are the most reactive is the

Unlike metals, solid nonmetals are

Unstable atomic nuclei that release fast moving particles and energy are

Why is the mass of a carbon atom greater than the ttal mass of its protons and electrons?

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