Na_2 SO_4 (an ionic solid) is soluble in water (polar liquid) ii) The Ozone laye

Question

Na_2 SO_4 (an ionic solid) is soluble in water (polar liquid) ii) The Ozone layer is in the stratosphere at an altitude of about 30 km. iii) Electronegativity tends to increase as we go up a group (decrease in atomic#) or across a period from right to left. iv) A polyatomic ions is a group of atoms that is held together by ionic bonds a has acquired a charge. v) Nuclear fission is the reaction that provides the sun's energy. vi) A transmutation process is a nuclear reaction in which a nuclide of one element is changed into nuclide of the same element. vii) The primary effect at ground level Ozone accumulation is skin cancer.

Explanation / Answer

i.True.Na2SO4 readily soluble in water

ii.True.Ozone layer protecting us from UV radiation

iii.True.

iv.False. The atoms in polyatomic ion are held together by covalent bonds

v.False.Nuclear fusion reaction provide energy to sun

vi.False.A transmutation is reaction in which nuclides of one element changed into nuclides of another element

vii.False

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