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Science Crossword

Across
Central block of the periodic table (hint: ends with metal)
An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
six chemical elements that make up Group 1 (Ia) of the periodic table—namely, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
The probability field of the electron
The center of an atom.
First period the comes after the periodic table splits.
Nuber of protons
The vertical columns on the table
Most of the elements are this, but just in different forms.
Also known as a Cation, a deficiency of electrons with respect to protons.
Defined as the spontaneous emission of particles
Down
any of the gaseous element's helium, neon, argon, krypton, xenon, and radon, occupying Group 18 of the periodic table.
2nd Period after the split of the table, under the Lanthanides.
Also known as nuclear decay, radioactivity, radioactive disintegration or nuclear disintegration, is the process by which an unstable atomic nucleus loses energy by radiation, releases the beta particle in the process.
metals of group II of the periodic table comprising beryllium, magnesium, calcium, strontium, barium, and radium.
Has a + charge, part of the nucleus.
an element or substance that is not a metal.
an element (e.g., arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
Increases of decrease in the number of neutrons.
Has a neutral charge and is in the center of an atom.
Has a - charge, represented as a probability field.
Also known as an anion, a surplus number of electrons.
Very reactive group, elements like Chlorine, bromine, and iodine are included in the group.
Horizontal rows on the periodic table.
Sum of the Protons and Neutrons