1. alpha particle
alpha particles are positively charged helium nuclei with weak penetrating power
The answer is (4) 4. Germanium is a main group element in group 4A. Therefore, like carbon, it has 4 valence electrons in the ground state.
Answer:
Helium is the second element on the periodic table. It is located in period 1 and group 18 or 8A on the righthand side of the table. This group contains the noble gases, which are the most chemically inert elements on the periodic table. Each He atom has two protons and usually two neutrons and two electrons.
Explanation:
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Answer: C₂H₄+3 O₂= 2 CO₂+ 2 H₂O
Explanation:
There is a special temperature for every substance called the melting point. When a solid reaches the temperature of its melting point, it can become a liquid.
