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1.
Why do most of the elements try to participate in the chemical combinations?
i. To gain more electrons
ii. To achieve Inert Gas configuration
iii. To complete their octet
iv. To complete their inner shells
Choose the correct option among the following
i. To gain more electrons
ii. To achieve Inert Gas configuration
iii. To complete their octet
iv. To complete their inner shells
Choose the correct option among the following
2.
Which of the following pairs are isobars?
3.
Which radioactive element is used in the treatment of cancer?
4.
Which scientist gave the concept of fixed energy levels around the nucleus?
5.
What prevents an atom from being collapsed?
6.
Which of the following statements is incorrect about the structure of an atom?
i. The whole mass of an atom is concentrated in the nucleus
ii. The atom is an indivisible particle
iii. The atom as a whole is neutral
iv. All the atoms are stable in their basic state
Choose the right option among the following:
i. The whole mass of an atom is concentrated in the nucleus
ii. The atom is an indivisible particle
iii. The atom as a whole is neutral
iv. All the atoms are stable in their basic state
Choose the right option among the following:
7.
Which of the two will be chemically more reactive, Sulphur(S) with atomic number 16 or Chlorine (Cl) with atomic number 17?
8.
Which of the following elements does not exhibit the electrovalencey?
9.
Which of the following does not match the characteristics of an Isotope?
10.
What property of an element determines its chemical behaviour?